I think it's this?
https://www.mangago.zone/read-manga/wave_nail/
Are you referring to this? https://www.mangago.zone/read-manga/wave_nail/
Yes!!!! Thank you so much!!! I've been looking for it for a very long time~ thank you so much~
Yes that's the one. I'm dieing to find this for so long. Thank you so much I really appreciate it. I didn't even know what happened next because I can't find the name lol.
It's a man who lives next to the sea and he went fishing as usual but his boat the sank and he passed out. He woke up and saw that he was next to a big man with purple hair sleeping next to him and they were under water