The Lost Continent by Cattchi, Paglycos

Kirishima Eijirou is from a noble family of pirate exterminators.
Bakugou Katsuki is rising as one of the most fearsome pirates on the seas.

When a trade goes awry, Kirishima finds himself cast among Bakugou's crew, having to learn the ropes and the sea as they chase after All Might's infamous hidden treasure.

(This was originally written on AO3 please check out the original author and do not give me any credit I only posted this so I can read it while offline)

(Almost direct copy)

Direct copy of tags:
Bakugou Katsuki/Kirishima Eijirou, Bakugou Katsuki, Kirishima Eijirou, Ashido Mina, Ojiro Mashirao, Sero Hanta, Midoriya Izuku, Yagi Toshinori | All Might, Bakugou Mitsuki, Todoroki Shouto, Monoma Neito, Todoroki Enji | Endeavor, First Kiss, Loss of Virginity, Rimming, Blow Jobs, Light Dom/sub, lots of sex but there's plot, major character off screen death, Pirate AU, gore and blood and angst, Falling In Love, non descriptive mentions of past rape, Mildly Dubious Consent, kiri gets rushed by a non-canon chara, with sexual intent and its sudden but, it ends up okay, Don't Like Don't Read, sexual assault themes sexual themes and value around virginity, Assault, i hope that's everything ! it's a bit intense so take care