Honey - It's a Japanese rom com about this "thug" who is actually sweet and misunderstood and falls in love at first sight with this girl who's scared of him so she takes a while to return his intense unrequited feelings.
Kiss Me - It's the the Thai version of fall in love at first kiss and honestly my fave version out of the ten plus versions of it I've seen. The angst and intensity when he admits he likes her back is really unmatched.
My Best Summer - I haven't seen the c-drama so I can't say what happens there but in this one they both like each other but the boy rejects for some reasons.
The Red Sleeve - This is based on a true historical story where a King basically simped for his hand maiden for fifteen years and she tried to resist.
Le Coup de Foudre - His little man pride was hurt so he acted like he didn't return her feelings for a bit.
Kieta Hatsukoi - I'm not sure if you can watch BL but this is such cute romcom about unrequited love or rather just waiting for your crush to like you back. ( I have a lot of good BL unrequited love reccs but not everyone is into BL so I'm not sure if should list them all)
Sweet Teeth - Decently cute C- drama where the leads try to figure out if their love is unrequited or not
Chocolate - Slow paced K-drama where the girl is really in love and the guy slowly falls for her after being all like " I WON't DaTe YoU" and what not.
Do You Love Me as I Love You - I mean the tittle says it all.
Make a Wish - My fave shape shifter romance where the ML tries to resist the FL and her feelings.
These are my faves since I also like the whole " I know he/she likes me back they just won't stop resisting" genre so I got excited and listed too many! Hope it hasn't overwhelmed you! Happy watching :)