In Tokyo, there's a university called Tokyo University, or Tokyo U. It's considered one of the best in the country and houses top-of-the-line facilities in its campus, like a hospital.

"C'mon, we go in, collect from the wife and leave," a thug says as he skirts around the hospital.

"I know, I know, just doesn't feel right, ya know?" the underling responds.

"Well, too late to say anything," their target is in an alley walking with a tired gait.

They block out the exit as they start collecting on the debt as one of them stands back to dissuade anyone from entering.

That doesn't stop one from shoving him away and entering the alley, "Leave the poor woman alone, she's already got enough to worry about with her husband in the hospital."

Everyone turns to see a dark-skinned adult with glasses while he was wearing a white lab coat and had a purse in hand.

"Who are you? Her one-night stand?" the thugs chuckle.

"Nope, just here to deliver something she forgot," he opened his eyes, showing disgust, "and taking care of the trash."

The punks slowly look over, "What was that?"

His glasses flash in the moonlight as he says, "Wanna come here and find out?"

They release the woman as she hides as the four punks surround him.

Punks

The first tried to attack but was kicked in the chest and sent into the air, knocking the air out of him and knocking him out.

Another tried to punch him from behind but he got on his hands and kicked his leg up, hitting the second's chin and getting into a handstand before bringing both legs down on his head and backflipping onto his back and knocking him out.

The third tried for a right hook but the man side stepped and threw a side kick to his side and followed by bringing his back leg forward in a side kick at the fourth thug, shoving him back and ending with a roundhouse to the chin.

The third was scared so he stepped up and kicked him in the stomach, forcing him to bend over before planting his foot on the back of his head and forcing it down onto the pavement.

The woman was going to profusely thank him when her savior asked, "Are you going to pay them?"

She nods and leaves an envelope for them when they wake up before the young man asks, "Can I escort you home? It is late."

She agrees as she walks and has idle chatter with the young man named Hiroki.

I walk up to the hospital after leaving the woman at her house and head towards my teacher's room. I'm currently interning as a doctor in the Tokyo U hospital, they found me helping the injured when everything went down in Spring.

I couldn't help but feel pissed at the stupidity of my brother, even if it was months ago when it happened.

I shake my head as I remember what happened afterwards, how he became the patriarch of the Karuga and the master of two maids. He also got into a relationship with Asuka so it's been entertaining teasing him about that. I would tease him about his lack of knowledge on relationships but he would turn it around and tease me.

I open the door as I see my teacher and supervisor for my internship, Dr. Masato. I'm being taught about medicine in the summer with certain exceptions. I have Friday, Saturday, and Sunday off.

"Ah, Mizuki-san, were you able to give the lady her purse back?" he asks.

"Yeah, sorry I took so long."

"No, it's fine," he starts, "It's about time you should head home anyways."

I nod as I head to the changing room and change into something more comfortable.

My brother may be an idiot but he is right about baggy pants, though not to the level that he preaches. I'm wearing some black jeans with a white shirt and blue sneakers.

I head to the subway station and head to my station before getting into the subway and heading to Asakusa.

"I'm home!" I yell out to my home.

"Welcome back," I hear from mom, Ren and Akio.

I enter to see Akio doing something on a laptop while Ren is helping him. Ren has become one of his lieutenants in the family and takes charge of most economical situations and has grown from being the weakest in the house to an actual fighting force. Though his business sense far outstrips any other skill and has become the overseer to most of the business in Akio's control.

"Girlfriend, crime family, money. Wow, Akio," I start with sarcasm and a smirk, "You're living the dream."

"Fuck you too," he retorts with a growl as the bags under his eyes make it more threatening. Since he got the seat of Patriarch, he has been hard at work to make sure that the family stays afloat and makes a profit. Something he seems to be close to be completing if his grin is anything to say.

"And done," he says as he closes the laptop, "Finally, I can get some sleep."

"Yeah, maybe I can too," I say into my cup as he shows me the middle finger while mom chuckles.

So, to stay awake Akio would blast music to try and stay up. Sometimes Asuka would come and try to help him by giving support, in multiple different ways if Akio's groans are anything to go by.

Note to self: Never ask Asuka for a massage.

Good thing was that Akio was especially busy so I was able to get some nice sleep. I'm too lazy to actually move rooms and it will take too long to actually do it.

I ignore it in favor of looking through my notes from the day. And the news speaks up, "There has been a dramatic increase in hospital deaths, police are believing the cause to be foul play but have ruled out the yakuza…"

This brought all our attention to the TV as we drew parallels to Akio's own situation, Akio told us that there were more players behind the scenes than we could believe.

I could only grimace and hope for the best. I look over at Akio.

"Can't you do something about it?" I ask.

He sighs and responds, "Wish I could, but can't. That's not Karuga family territory, so we can't really do much. Though does make you wonder what the fuck the family that's there is doing."

I noticed that once Akio unlocked Yasei he became a lot more free, more wild, more him. There's also the tanto blade he showed me, he would never tell me where he got it from though.

Ignoring the fact that my gangster brother now has a very dangerous weapon, mom brought us food as we started eating and Akio was having trouble staying awake, "Mom, I'm a little bit too tired to eat, Imma go sleep. Night."

We gave our own farewells as he stumbled up to his room. Say what you want about my brother but he is responsible. I remember the first time the twins watched anime and tried to get in the same bed as him, he instantly scolded them and tried to gently turn down their feelings, but they didn't give up. So when they tried again he doubled down and forbade them from entering and to respect both their own feelings and the target of said feelings.

I finished eating and gave my own farewells before heading up to go to bed.

Once I woke up I got ready to head back into the hospital in a few hours, so I changed into my clothing which consisted of jeans and a black shirt.

I head downstairs to see Akio waiting with Ren as they talked about mundane subjects, his inability to pick a spot to take Asuka out to is one of these subjects.

I sit down, "Just take her to the carnival, both of you enjoy going there."

He stops as he thinks about, "Oh, good idea."

With my part done we continue on to mundane conversations, how Ren's mother was doing, how my internship was going, how Akio's family is doing. Mundane subjects.

I picked up my phone as it rang, it was an email that looked like spam. It was about how if you do a dance for certain gods you'll get their blessings.

"Watcha looking at?" Akio asks in his Kansai accent.

"Nothing, just some spam about how you will be blessed by gods if you do a dance or something."

He looks at me as if I was the insane one, "Hiroki, I can move at speeds that only myths, gods, and legends can enter and summon a dragon by invoking it, gaining the blessing of a god sounds tame compared to that."

He was right, "So, wanna do it together?"

He just shrugs, "Sure."

After a bit of research we found a dance that may suit us. It's called the 'Dance of the Cherry Blossoms'.

We went to the dojo as we studied the moves, something that didn't take long due to our own love and understanding of dancing, Ren joined in after a bit.

Soon, the three of us were ready.

There was a beat as I stood in front with Akio to my right and Ren to the left.

Then we danced, the first part was quick, there were a lot of kicks as the kata-like movements as we spun and danced.

Then it slowed down in the second part and we were slower and our movements showed it.

Then the third and final part happened, it was a spin and movement to the right, but when I did it, cherry blossoms surrounded me and I was where I was supposed to be. Akio nearly tripped and so did Ren but neither stopped until the dance ended.

There was silence until Akio looked at me with bright eyes, "What was that? You literally became a storm of cherry blossoms and teleported."

I shrugged as I didn't know how but, "I know how to do it again."

Their eyes asked the question as I walked to the center of the dojo and I breathed before spinning on one foot as I felt my Heat burst into Extreme Heat Mode and translucent cherry blossoms fell around me.

I concentrated and spun to the side, as if evading an attack, only for me to turn into translucent cherry blossoms and go farther than before. I practiced again and again until it felt like second nature.

Learned: Blessing of the Cherry Blossoms

Dance for the gods and gain their blessings!

I've always loved dancing right behind medical work, when I first learned ball dancing I'd dance with anyone in the house and just dance around the house listening to music. It was always fun.

I saw Ren's and Akio's star-stricken face as I danced in my Extreme Heat Mode until it was over.

There was silence until we heard our mother call us for dinner. We all hurried to eat.

I was back at the Hospital as Dr. Masato taught me all the lethal organs.

"The kidney is the weakest organ, a clean punch by a normal adult male could badly rupture it."

My face twitches. And Akio's punches can break through concrete, mom's punches have brought down concrete walls. What a wonder any of us are still alive.

This kept going until it was time to pack up and I left for the city to explore for a bit.

I was walking around for a bit until I got a call from the hospital, "Hello?"

"Hiroki! Come quick!"

I didn't question anything as I started running, "What happened?"

"A politician and his security team just came in and we're currently busy with the security team and others. You'll have to take care of his operation."

Surgery?! "But Sir, I don't have any experience."

"Is that going to stop you?"

"No." I say without skipping a beat. I took the oath to save lives. We've practiced on fakes and smaller injuries, time to test my mettle.

"What's the situation?" I ask Dr. Masato.

"Lacerations, scrapes, broken bones, gunshot wounds in non-fatal areas but can't be left for long, and a possible concussion."

I nod as it reminds me of the times I've helped patch up Akio and my parents, "Gotcha."

Without skipping a beat I sanitize myself as Dr. Masato comes around as we place on surgical masks and gloves while taking precautions.

The politician whose name I never asked for opens his eyes as I'm preparing the anesthesia, "Let…."

I quirk a brow as I lean in, "Please, let me die." My eyebrows shoot up in astonishment, "I have done so much I-I don't deserve to live."

I just shook my head, "I took an oath to save those who are injured. I will follow through the oath, besides, if you live you can fix it all."

He wheezed, "I don't believe that will be possible."

"How about a bet, if you live by tomorrow, you'll fix everything you messed up?" I didn't let him finish as I placed him under anesthesia and he was starting to go under.

He chuckles as he says, "I accept."

I grit my teeth as I prepared myself.

Time has passed, I don't know how long, but it has passed and the politician is in stable condition. I sigh as I leave the room and prepare myself.

I change back into my earlier clothes and wait.

Wait in front of the operating room, wait to follow through with my end of the wager.

I hear steps as I turn to see a group of yakuza walk in with weapons and a purpose.

They all stop as I look at the pin on their tops. Not Motokasu, probably Noru.

What makes it more difficult is the fact that we are in Motokasu territory. This is basically a declaration of war.

"Step aside, runt, wouldn't want to get hurt, would you?"

I sigh as I get into my fighting stance and ready myself, "It doesn't matter how many dicks a man has if none of them are actually worth a damn."

He growls out, "Fine, you asked for it, get him!"

Punks

I start off with a side kick at the first charging punk as it sends him back flying into the second as I duck under another and sweep his feet from under him as I lash out with an elbow to another before finding my leg caught by the punk I sweeped.

They start charging as I throw a spinning hook kick, catching the first few, before kicking the floor as I flip and land on the thug's back before continuing with a wide round house that caught a punk's jaw.

A punk charges with his blade up in an over head swing as I step off the punk I was on and step forward as I slide with a trail of cherry blossoms behind me into a sidekick into his stomach as he crumples onto his knees before I raise my foot in an axe kick, slamming his face onto the floor.

I side step a bat as I follow into a side kick then a round house to his stomach and a tornado kick to his face as I transfer to a low sweep and spin, catching some of them off guard.

I transfer to a handstand and kick the face of one of them before going back and throwing a wide spinning hook kick as more fall.

The boss growls as he signals for more, I run to the first and jump on him and curl my legs around the back of his neck before spinning so I'm grabbing his torso and kick back, forcing the man I'm on to spin and catching two of the punks before kicking up and landing on his face as we fall.

I get up and follow with a spinning hook kick and a round house before jumping up into a roundhouse and throw a spinning hook kick while in the air.

It goes on for a while until all the smaller punks are down and I'm breathing hard and only the boss is left.

I'm not built for this, Akio, mom and dad are the monsters here.

…

I don't know why but I feel like people are looking at me incredulously.

I shake my thoughts off as I walk forwards and he stumbles back, "M-monster! You're a monster!"

I couldn't help but chuckle, "Oh, you poor innocent man." I crouch down, "You haven't seen anything."

Compared to Akio, mom, or dad? I'm like a little monster.

He got up and glared with shaking limbs as he got into a boxing stance while I inhaled deeply and exhaled before quickly blocking a side kick sent to my face with my right hand.

Yakuza Boss

I retaliate with a right kick to his stomach as he stepped back but I continued with a tornado kick and a low sweep at his foot as he stumbled back and I opened with an uppercut with my elbow that nearly hit him but was caught off guard when he threw a hook to my side and followed with another to my jaw before grabbing me by the collar.

I struggled before grabbing his arms and kicking one of his shins from under him and kneeing him in the chin as he fell back but quickly got up.

I ran forward before activating the Extreme Essence of the Scattering Petals as translucent cherry blossoms followed me and I cartwheeled without using my hands as the back leg caught his chin and he stumbled before I threw a right kick and used it to follow with a spinning hook kick before backflipping and catching his chin and throw a dive kick to his exposed chest that sent him flying to a wall.

He growled, "Alright kid, play time's over." He roared as a yellow aura enveloped him. I placed a foot over the other one and spun as I activated Extreme Heat mode as cherry blossoms scattered around me and shifted my stance so I was lower and had an arm extended arm while the other was next to my chest. He charged forward but I got on my hands and lashed out with a leg before going to a handstand and lashing out with more kicks as I walked forward but he took them before grabbing one of my legs and throwing me to a wall.

I kicked off the wall as he charged and threw a spinning hook kick that was purposely too high and followed with a sweep kick and ending with a backflip, landing on his back as he coughed.

His Extreme Heat Mode was still up but I threw a spinning hook kick and followed with a cartwheel before going on a handstand and extending my legs outward and spinning like a top as each spin caught his head as the yellow aura finally fell and so did mine as I stopped.

He was swaying a bit but I finished it by running forward and kicked off his side and brought my right leg over and onto the back of his head as it hit the floor unconscious.

I released a heavy breath as I got to my feet and sat on one of the chairs, waiting for morning.

"I hope this is worth it."

The morning after, the news reached the ears of the news stations as the family was investigated only to find nothing corresponding to the family that attacked a hospital while Akio didn't say anything, both him and dad were talking in hushed tones and I'm fairly sure I heard the words castration once or twice. I'm also sure mom joined in once I went upstairs to catch up on any sleep I lost.

I woke up once more during the sunset as I didn't hear anything around me. Not the sound of the TV on or Akio's music in the house. I was all alone.

I didn't have the same problems as Akio when it comes to silence, he sees it as claustrophobic and terrifying, though that is understandable considering what he went through when we were younger.

My frown deepens as my thoughts turn to Akio's shift in personality. While it's far from unprecedented, it also came with a drastic change in strength as well. He's still Akio. Just more wild. I almost feel jealous.

I silently chuckle, I am jealous. Emotions aren't something you can almost be, there are only varying levels of those emotions.

Is this how Akio felt?

I grit my teeth as I stare at the ceiling and resolve myself.

I dreamt of cherry blossoms and an unbending tree.

A/N: hello everyone, Sol here. Sorry for the short chapter. For the two who asked why this was a yakuza crossover, its mostly because of the heavy yakuza system. I was conflicted but decided to turn it back into a regular fanfiction. That said, I'm going to need to change a few things, especially around the beginning, mostly with dialogue and the appearance of characters(my dumbass thought Ikaruga always had long hair, not the case) anyway, I hope you guys enjoyed getting to somewhat know Hiroki since this now his story. Sorry if it seems half-baked but Sasha's and Akira's will be more interesting, hopefully. Anyway, follow, favorite, or review.