The story was one shot(1 chapter) but contains many love story

it was raining and a wife seeing her ring and remembering something special about it

the first story about a man who want to propose to the woman who works as elevator girl

the man go to the place she works but drop the ring he want used to proposed to the woman

the man meet the girl and feels sad thinking he was pathetic losing the ring, they made up and the man give him a candy ring. the funny thing is that someone pick the ring box and give it to the elevator girl saying it was a lost item(she did'nt know it was the proposed ring for her)

skip to another place in rain day, a boy who loves a girl and want to go home with her after school in rainy days. Sadly someone took his umbrella and he was sad, when he want to go home alone drenched in rain, he meet the girl and the girl offer her umbrella saying want to go together ?

then goes to another story which i kinda forgot ,where a college man goes to his college campus and meet with a woman there. Both of them somehow become lovey dovey

the last scene was about the man who was already married(the ring lost man) and go home and his wife greet him.

the end

It's "Drops", the 5th story of Toumei Ningen no Koi

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My current top 3:
Fullmetal Alchemist
Pandora Hearts
3-gatsu no Lion