Izuku was not having a fun time right now.

Currently, he was tied up at the moment-literally. Hundreds of thick green vines wrapped around him in a vice grip, restraining his movement. If he weren't wearing his bodysuit Kevlar and Nomex mesh with a carbon fiber shell- he would've been crushed like a tin can. Thankfully, Mei Hatsume, head of Midoriya Enterprises' R Team, had designed this suit just for situations like the one he currently found himself in, and for villains physically stronger than himself

Izuku had gotten into this predicament after having noticed on a satellite feed via the Batcomputer that there was an unnaturally rapid growth of plant life near Kashiki Park, and suspecting who the culprit was, he decided to find out.

Unfortunately, while scoping out the site to see if anything was truly amiss, Izuku didn't notice a slew of vines sneaking up on him and wrapping him up.

"What should we do with him, Yakima? Are you hungry, or do you still want to have fun with him?" A voice called out, speaking to a large carnivorous Venus Flytrap chewing on his cape. Currently, tendrils of vines-all coming from the culprit's hair- ensnared him completely, and wouldn't allow him to move.

"Ivy-" he started to say before he got cut off.

"Please, Batman, call me Ibara. Those who I respect…" Ivy came closer and moved her hand across his chest in a circular motion. " … and admire can call me by my given name."

Ibara Shiozaki was once a respected botanist with a meta ability that replaced her hair with vines. Ibara snapped after realizing how much humanity had 'destroyed' the planet. Afterward, a laboratory accident mutated her, transforming Ibara into a plant/human hybrid, though she pleaded that God had transformed her. Eventually, Ibara renamed herself Poison Ivy and went on a crusade to rid the world of mankind's rotting influence on the planet. Clothed in a leafy green leotard, Ivy had fought the Caped Crusader several times, each one ending in her being incarcerated at Arkham Asylum for the Criminally Insane or escaping the long arms of the law.

Izuku gritted his teeth. "Fine, Ibara- you're not insane or evil like the other villains I fight. You have good intentions, but the way you carry them out is misunderstood and executed in a way that only brings harm to others."

Ibara gasped in outrage. " Harm?! Do you say that I bring harm to others when each day, more and more of God's beautiful creation itself- is damaged and destroyed? Even this park," she gestured to the wooded and grass-covered area around them. "-is planned to be downsized for more humans to occupy and destroy Mother Nature! And they call me a terrorist?!" she all but yelled.

"Specifically, an eco-terrorist protecting plant life while trying to eliminate all traces of man-made, abiotic systems," Izuku said with a smirk, though that didn't help Ibara's disposition.

Ibara tightened her grip on her vines and drew Izuku closer to her. "I am not an eco-terrorist. I am a guardian, a protector of all things truly natural. Humanity is causing our planet to rot; they drain its natural resources, pollute the oceans, and murder hundreds of thousands of my sisters and brothers each day. Every minute, we lose about 40 football field-sized plots of vegetation, and all you want is more, more and more. Remember, before He made humans, God created flora, a much more superior kingdom of life. Plants do not murder. Plants do not steal or lie, and plants do as they should, unlike what humans do!" she exclaimed with resentment in her voice.

"Ibara, there's one thing that humans are better than plants and do you know what that is?" Intrigued by his question, Ibara drew in even closer.

"Oh, and what is that?"

"It's a secret, you've got to come closer." he chided. Convinced, Ibara came closer, inches away from his face.

"Now, how are humans better than plants?" she asked, intrigued by his question

"You want to know?" he goaded, slightly smirking.

"Yes, what is it?" she demanded.

"Okay, I'll tell you…" after a pause, Izuku finally spoke up.

"Utility Belt: Charge to stun."

A thousand volts of electricity emanated from the belt, shocking Ibara literally and figuratively.

"Ah!" she yelped, letting go of the belt as if it were a poisonous snake.

Out of reflex, the vines holding Izuku loosened. That was his window; using his scallops on his gloves to cut them, he quickly snatched the belt from the ground and buckled it around himself in one fluid motion. Opening a pouch from one of its many pockets he grabbed a small sphere and threw it in the air.

"Ibara, you asked how humans are better…" he began to say as the sphere reached its apex, miniature holes began to open up, spewing thick green clouds of an unknown substance into the air.

"Humans don't die after getting spayed by the weed killer."

The thick, invasive gas spread around the area, withering and killing any plant it came in contact with. Ibara's vines dropped dead, as well as Yakima. The Princess of Plants grimaced at the sneak attack but remained calm.

"While I detest that you killed my vines, I respect that you used a natural-based one instead of one of those repugnant synthetic ones."

"I'm guessing you're not going to give up because I stayed eco-friendly, are you?" the Caped Crusader quipped.

"I will not give up my mission, but my rose garden is calling me right now." With a snap of her fingers, Ibara summoned a ring of vines that began to surround her, before slowly swallowing her.

"See you next time, Dark Knight."

The Batcave was mostly silent as Izuku worked on his computer. The bats situated around the cave must have been sleeping, and the constant rhythm of the waterfall located on the other side of the cave sounded like white noise instead of a distinct sound. Currently, Izuku searched through reports of new crime around the area, looking at multiple windows at a time.

Soft footsteps behind Izuku. "A cup of warm green tea, Master Izuku?"

A kind, warm smile revealed an elderly figure clothed in a standard butler's uniform. "Thank you, Tobita," he said, grabbing the teacup and saucer from his friend and father figure.

"Another long night, sir? I would figure that after dealing with Miss Shiozaki, you would at least treat yourself to a warm bath."

Izuku sighed, looking back at the one screen connected to the Batcomputer. "You know how it is, Tobita; evil never rests, and as long as it exists in Gotham, neither can l. And after my encounter with her earlier tonight, I need to be on my guard."

Tobita shook his head in disappointment. "Master Izuku, while that may work for you now, that way of living will not be fulfilling. Day in and day out, you dress up as a bat, pummeling criminals and other assorted wrong-doers while you masquerade as an absent-minded oddball billionaire. I, and the city as a whole, understand and appreciate the service you do to keep us safe, but working until your unending mission is finished and having only the night as a companion? It seems unfitting for a man of such esteem."

Izuku softly blew on his tea and brought the warm porcelain cup to his mouth. "I understand, Tobita, but with what I do, having a significant other wouldn't be able to love both Izuku Midoriya and Batman."

"That might not be as true as you think, Master Izuku. What about Miss Uraraka? Despite her nighttime exploits, your encounters with her seem to be more than simply catching her and putting a pair of cuffs around her. It seems that one thing she always steals is your heart."

In exasperation, Izuku rubbed his temples. "Tobita, while I could see her drop the whip and cat burglar act, I doubt she would want to settle down, especially with someone she loves to 'play around' with."

"Very well, sir. But what about Miss Yaoyorozu? Despite her parentage, she seems quite lovely to be around."

Izuku sighed again and took a giant gulp of his tea. "Tobita, even if we both have feelings for each other, I'm not going to date the daughter of the Demon's Head."

Tobita lowered his head in defeat. "I suppose you are right, sir. Enjoy the rest of your night."

Izuku swiveled his chair around to face him and smiled at his friend. "Thank you, Tobita, and good night."

With that, Izuku's trusty butler began walking back upstairs. Suddenly, though, he stopped and turned around. "You should check your Utility Belt, sir. It seems that Miss Shiozaki left you a present."

Feeling around his belt, Izuku found what Tobita meant. In one of his top left pockets, there was a medium, bulb-shaped object lodged within. Taking it out with care but also wariness, Izuku covered the object with a gloved fist. Extending it a few feet from his face, he unfurled his fist.

Opening his hand revealed to be not a tracking device or a bomb, but a small rosebud. It was velvety, soft, and smooth, with layers of petals surrounding the center. It was ruby red, and though it was not attached to its stem, it was beautiful on its own.

Looking at the bud closer revealed a white slip of paper sandwiched between a layer of petals. Izuku carefully removed the slip and sighed in exasperation again as he saw what was written.

Tonight was a blessing to be with you and as fun as ever. It was too bad that we couldn't have spent more time together.

Same time next week?

-Ibara

P.S.: don't worry, the flower's not poisoned. Call me any time.

Below the note was an imprint of what seemed to be lipstick and Ibara's number written in green ink.

Izuku placed the bud on a desk next to him and got up from the chair he was sitting in. Walking to the Batmobile, he hopped in and turned the car's engine on.

If she wanted another night on the town with him, then she would get it.

Notes:

As both a DC and MHA fan, this was really fun (Batman is my favorite superhero and Poison Ivy is only of my favorite Bat-villains). Honestly, I wouldn't mind doing a full fic exploring this AU. I'm sure it was easy, but can you guess who Ochaco and Momo are in this universe? I have a bunch of other headcanons for who the MHA characters are in this AU.

Unitl tomorrow, have a great day!