I wrote One piece (Manga by Eiichiro Oda) fanfiction.
Here is the summary:
During a chaotic sea battle, Luffy dives headfirst into one of Law’s ROOM abilities—and gets himself trapped inside it. What starts as comic disaster turns into unexpected intimacy as the two captains are forced to share hours of suspended stillness: one floating upside-down and talking endlessly, the other pretending not to care while secretly recalculating reality.
Between teasing, quiet confessions, and the hum of the sea, they confront fear, mortality, and what it means to be alive together.
When the ROOM finally breaks, it isn’t just the barrier that dissolves.
A tender, funny, and deeply romantic story of science meeting chaos — and how, in the end, Law’s world always has room for Luffy.
You can read the story on fanfiction archive here:
https://archiveofourown.org/works/72901506