"Ah! Sensei!" Mikey stumbled down. Busted. Splinter took off the swords from him and puts it back to the shelf.

"This is an important item from Leonardo, Michelangelo." Splinter said. "What are you doing with it anyway?"

"Uhh… I wanted to know how he died." He said truthfully. "I'm investigation since Leo won't tell me."

"Well… I do not know of any details much of his death. But if it will help you, I think it's time to tell you everything I know."

"No, Donnie! I'm not!" Raph answered.

"Really? Uh huh… I saw the notebook Leo wrote." Donnie said as he showed up the note.

You loved Donnie.

Leo can easily see the shock and anger to his red banded brother's face. He can tell it's for him.

"Leo, I'm so going to exorcise you." Raph muttered. "Look, Donnie, that's just nothing. Leo just wrote that to piss me off."

"Oh, lying now, are we?" Leo said as he flies behind Raph. "What I hate the most are liars." He pushed Raph, which caused him to hug Don.

"Raph!" Donnie said.

"It wasn't me!" Raph said and then squinted his eyes. "Leo… He's here."

"Yeah, I am, brother… And I'm so sick of your denial. It's time to end this and hook you two up together." The leader said but he knew Raph and Don will not hear anything.

"Leo, leave us alone. Go fix your issue with Mikey." Raph said.

"Seriously, Raph… This had been a dirty secret many years ago. It's time for Donnie to know. We never know if he likes you back." Leo said and grinned.

"Well, don't believe what Leo said." Raph grabbed the note and crumpled it. "One, I don't have feelings for you. Two, you liked April." He explained and threw it to a trash can.

"Oh, for God's sake!" Leo said as Raph and Donnie shriek when they saw Donnie's notebook floating on its own.

"You see, Michelangelo. Leonardo is fond of you. He gives you everything you asked because of that, it also cost his life. You are a sickish baby and he wanted to cure you. He took the risk and saved you." Master Splinter said to the youngest turtle, which seemed to be out of focus, in a different way this time.
"Something wrong, Michelangelo?"

"Sensei, I saw this on his sword. It's a haiku. I don't know to whom it was for." Mikey gave the paper to Splinter and he read it elegantly.

"I thought he had fallen in love to someone else." Mikey said.

"Yes, Michelangelo… He had fallen in love with an enemy."

Mikey remembered the information Master Splinter gave him and now, he is going to the sacred place of his eldest brother that his teacher pointed to search for clues.

Leonardo's room.

Along the way, he heard shrieking in Raph's room. He rushed inside and saw Raphael and Donatello shouting and a floating notebook.

"Damn it, Leo." Mikey said. "Okay, what's up?"

Silence occurred.

"Leo's right, Raph. Donnie had the right to know." Mikey nodded.

"Bullshit! I don't have something to tell to Donnie!" he shouted.

"Raph, calm down!" Donnie said.

"Leo said you're even jealous of Donnie liking April that time. You were so happy when Donnie made you the Shell Cycle, that's why you often take care of it-"

"No! I don't love him! Why am I going to be jealous to that sadorable, nerd dork who think he will be loved back by his best friend when obviously she fell in love to my best friend?! Why am I going to love someone that will not love me back?!" Raph shouted and panted after the long outburst.

Donnie started to sob and ran away from the room, trying to wipe his own tears.

"Don!" Raph ran after him.

"Don't worry, Mikey… They will make up…" Leo said. "I really think Raph deserved Donnie… Same of Donnie to Raph."

"Well, I'm off to go to my investigation." Mikey said as Leo just smirked.

Mikey slowly entered inside Leo's room. It's very peaceful and the room was still clean. He really thought this is Master Splinter's second room. He goes to the drawers and searching while sitting on his bed. It's all calligraphy, war books and haikus.

He placed his hand under Leo's pillow to be more comfortable, only to felt a paper. It was revealed to be a picture of a woman. This must be the woman Leo fell in love to and also his enemy.

She is wearing a black kimono. Her hair is short and had those small brownish eyes. At the back of the paper, there is one sweep writing of Leo's.

KARAI.

So let's see, Leo fell in love to this Karai and he got involved in it. Master Splinter said the cost of his death is giving whatever he wanted. He went back to his room and lay down on the bed to rest and think of a solution to this problem. He continued to spin this blue and orange origami flower he owned for so many years.

One light bulb flashed to his head.

Orange. Blue.

He knew the answer. He had solved the case.