KiriBaku Zombie Apocalypse

Kirishima's appearance:
He is a muscular young man of 1.70m height, with a well-developed physique due to his training. He has red eyes that point slightly inwards, and a small scar just above his right eye, he also has small eyebrows and very pointed teeth.

Katsuki's appearance:
He is a young boy of 1.72m height, with a slim and muscular build and a light skin tone. He has short, spiky, ash-blond hair with choppy bangs that hang over his eyebrows. His eyes are sharp and bright scarlet.

Kirishima and Katsuki used to date, but Katsuki dared to cheat on Kirishima, when Kirishima found out he felt devastated, betrayed and even stabbed.
When Katsuki realized his actions, he regretted it and tried to apologize to Kirishima, but the zombie apocalypse came, which was a good and bad thing for him, because since then, as Katsuki and Kirishima were together, they began to take care of each other as companions, and it helped their relationship to be repaired and they were almost like friends.

Attitude: Eijiro Kirishima is someone very kind, gentle, sometimes somewhat hormonal at night, strong, manly and has a cheerful smile, but when they mess with him and bother him, his kind attitude changes to a completely different and fierce one, he rarely gets angry, but he is not capable of hurting someone without a necessary reason.

Attitude: He is completely different from Kirishima, he is someone rude, grumpy, strong, tough, manly, proud, one would say with an explosive character.
But he has his soft, gentle, vulnerable and weak side, but Katsuki always hides that side with anger and will go

When Kirishima met Katsuki, he didn't like him because of his "irresponsible and little boy" character, but little by little he began to get closer, noticing that Katsuki was not who he always showed, noticing his hidden side, and they became friends, although Katsuki would throw insults at him and give him some hits (like scoldings), Kirishima just laughed, and took it as a fun game, he didn't get upset with Katsuki.
Katsuki since they became friends, his character became softer and lighter only with Kirishima, everyone noticed that Katsuki was kinder in his own way with Kirishima, some even joked saying things like "They already tamed the beast", or also when they got into trouble with Katsuki, they called Kirishima to calm him down, which he achieved easily and simply with just a few words, or hug him until he calmed down (to stop Katsuki from doing anything violent)