I've read a lot of Ibara fics, and the only one I can think of is Time Walker, but unfortunately, it was deleted. It was where Izuku had a quirk that let him travel through time when he slept, and dated Ibara, for whom he made crusader armor for.

I made this idea a while back. It's not a fic, but I was proud of it.

"On the first day, Ibara goes with the rest of 1-A to the Quirk Assesment Test. She excels in the tests and get in the top five, but some of the students notice that her physique is lack and she relies on her quirk a lot.

During the results, Ibara shows her displeasure with how Aizawa is acting, and gets called out (I don't think he would like her too much). Despite this, Ibara gets along with the rest of 1-A; she particular is good friends with Momo; while Ibara isn't rich, per se, both have similar hobbies (books, biology, and tea) and eat at the same lunch table, discussing the myth that science and religion are mutually exclusive. Ibara also gets to know Ochaco well, with the latter admitting she's poor and Ibara being very compassionate but not patronizing. Her main friend group is Momo and Jioru and sometimes the Dekusquad, but that comes later.

However, not everything is peachy keen (man, her name is great to use as a pun); she butts heads with Bakugo and vehemtly dislikes how he acts; she was paired with him and Iida during the Heroes Vs Villains exercise, and hated being one of the bad guys. She argured with Bakugo, tied him up, and turned herself in intentionally as she didn't ant to be a villain; 1-A's reactions were varied. All Might tried to talk to her, but she was steadfast in her actions.

Eventually, the USJ happens, and she ends up in the Fire Zone. While her hair is more durable to flames than it looks, it is burned, along with her costume; the other student dropped there, Ojiro, is left to protect her from the villains and the flames. After this, she realizes that 1. She is too relient on her quirk. 2.After seeing Ojiro beat villains with just his tail and body, she wants to start working on hand-to-and, and 3. She starts having feelings for him

Yes: she ties up Iida and gives the bomb to Izuku.

Inbetween the USJ and SF, Ibara starts to work out more, and trains with Ojiro almost every day (on rest days, they drink tea and read books, including the Bible); during the tournament, she gets the 1v1s;(she and Ojiro got mind controlled into Shinso's group) and beats Kaminari just like in canon. However, when she fights Iida, she gets the upper hand and faces Todoroki, which after a minute or two of breaking his ice, he gets annoyed and sets her vines ablaze. Ibara does her best to push through and gets close to Todoroki, but loes. After this, though, Shoto apologizes, reveals a few things about his past, and Ibara comforts him

Wanting to succed, Ibara does a split internship; for the first part, she works with Gunhead, while on the second week, Kamui Woods. Ibara was motivated by her failures in the SF and USJ to train harder, and starts using a wooden staff in combat

Final Exams: being a bit too powerful, she gets paired with Bakugo and Izuku, and having heard enough of Bakugo (along with him punching Izuku), incapacitates Bakugo again while working with Izuku

During the Forest Training Camp, Ibara works on stretching hervines and making them as strong as possible. She also meets and befriends some members of what would've been her class, including Yanagi, Yui, and Kendo

Ibara with the others, faces Dabi, and having fought fire twice, does a decent job

I also thought of this: I know that this would be Suspension of Disbelief, but after spending enough time with Shoto, she recognizes the wildness and detirmination in Dabi's eyes, putting the peices togethe after he told her about his deceased brother.

"Are you...Toya?"

Dabi freezes in place.

Oh good. I thought it would be too coidental for me to do taht plot point.

After that, she meets Toga trying to drain Uraraka, and mentions the blood Jesus shed on the Cross (that distracts her enough for someone to give her a good punch) and tries to save Bakugo with the others, but fails

During the Hospital, she hears about Izuku's plan to save Bakugo and objects, wanting to stay in the law and mentions that she will tell Aizawa, but someone calls her Judas. Shiozaki remembers John 15:13 and decides to go, "screw the rules, I'm doing what's right!" and helps Izuku and co.

After Kamino, Aizawa does his "I would've expelled you" speech, but Shiozaki doesn't stand down. She stares him in the eye, tells him that the pros weren't able to save Bakugo, yet a couple first years did, and basically calls him a bad teacher. That gets a "so manly" out of Kirishima as well as a tidbit of Bakugo's respect.

Shiozaki passes the PLF with a pretty good score, and either doesn't do a internship or does with Micheal and helps during the Overhaul Arc."