I think I have read this, but have no idea what it is. However, it's possible I put it in the following list, if you want to check there (it's a mix of manga that has police and/or yakuza in it). I can't promise that it's there, though. Hope you find it!
https://www.mangago.zone/home/mangalist/482885/
Yes I found it, thank you!!
could you tell me what the title is?? hehe
It's "Ai No Binzoko" chapter 4-5!
Ah, good! Glad it was there! :)
thankyou!!><
I forgot the title of this BL manga
A police was looking for someone then he approached his brother to find his target. I remember the brother always sits near the sea