Mikasa is a demon slayer of fourteen years old, a very strong one at that, so she often go on more dangerous missions and so she got paired up with muichiro tokito, the mist hashira, to go on those missions to ensure each other safety and muichiro of course always has that emotionless but deep attitude matching hers as well, so they both quickly became friends, good friends at that, so Mikasa often spar together and play quite a lot, so after some time of this good friendship they both started dating, and her big brother Sanemi shinazugawa didn’t know about it…hell he didn’t even know she liked someone!