I Love It

This is one of my absolute favorite mangas. The story is good (yeah it repeats itself, but it's always exciting), the characters are good, Dooshik is such a greenflag, and Jooha is loveable too. Their chemistry is amazing.
Another character I liked so much is Dooshik's boss (Jaeil Hyung), he was so funny. As for the ending....
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I Don't think they died. I think Jooha got back his memory (I was actually happy with the memory loss ending, because poor Jooha suffered so much T_T and he could finally start his life over without remembering all the bad things. And he fell in love with Dooshik again. But then of course Dooshik was sad to see Jooha not remembering anything they had, like the promise of filling up the jar with pearls and then leaving the country). So I think after he got back his memory they actually just got out of the water lol Dooshik can't swim, but Jooha can and he was the one saving Dooshik in the beginning of the story too. So it's probably a happy ending.