Both series are dark and you feel the missery throughout. Two young men takes care of each other when they have no one else and their parents fail them. They eventually fall in love. Gray shelter has more of an open ending while Happy of the end has a happy/hopeful ending. Happy of the end has more trigger warnings and traumatic things that happen.

Both stories involve a main character who has a disability (impaired vision/ no hearing) and it's a love story between a male care-giver and his client.

Both are office romances- boss and subordinate. Both are sweet and heartwarming. Both have couples with great chemistry. Both are short.

Both are office romances with an age-gap. In both of them the subordinate is trying to help the boss live a healthier (more happy) life. Both are cute. Both have couples with great chemistry. Both are short.

Both are office romances- boss and subordinate. Both are cute.
Both have couples with great chemistry.
Cherry Magic is more comedic and it has a fantasy element.

Both series have:
-characters that work in an office.
-one character that is trying to ignore/move on from the love they feel.
-nice characters that make each other happy and healthy.
-simple plots and they are short. They focus heavily on the two male leads and their story together, we dont get to know anything really about family or friends.
-give off similar vibes. They are feel-good and sweet but they have some problems that they talk about.

Both series:
-have male teens coming of age and falling in love.
-have leads that are working hard in school and is annoyed by the love interest, but also secretly like them.
-have one character that is confident in his sexuality and is supportive and understanding of another one that is struggling with his.
-show the emotional roller coaster that the characters go on, due to one of them not being able to accept themselves. They show realistic journeys to self acceptance.
-have complex characters that are likable but make mistakes.
-have really good acting and a couple with chemistry on screen.