Blue

Both Japanese boys' love dramas with eccentric, shonen manga-esque leads who have crushes on their teachers. Having similar story premises and comedic tones, you may enjoy one if enjoyed the other.

Both stories are about characters finding love on a getaway trip while escaping the problems of their everyday lives.

Behind Cut’s story isn’t executed as well as To My Star’s, but they are similar in tone/atmosphere and portrayal of romantic relationships that feel authentic.

Both are Pinoy cohabitation, hate-to-love BL. Both are character-driven stories with philosophical and sociological themes.

Close to You takes place within the same fictional universe, 3-4 years after the conclusion of Make Our Days Count. Characters from MODC make an appearance.

Both BL parodies. While this series directly pokes fun at BL tropes and clichés, The Boy Next Door imitates BL through situational irony.

Ossan's Love is also a Japanese BL that takes place in an office setting and has a manga-esque comedic style. Similar to Adachi, the main character in Ossan's Love finds out a colleague (or two) has feelings for him and his ordinary work life becomes hilariously complicated.