this has been bothering me for years!
im trying to find the title to this manga(not a manhwa)
all i remember is that it was a collections of stories about(or mostly) about u requited love
one of the them was about a girl who was in love with cousin(male), but she recently finds out he got a girlfriend. i think the male cousin had a fish mark or something, but a fish was defintely involved in the story.
the othet story was about a girl who falls in love with her mother's much younger boyfriend.

That's all i remember. They were all bittersweet endings. Please be so kind and help me find the title!! 😢