I just found this recently, it's really funny
http://www.mangago.me/read-manga/kaguya_wants_to_be_confessed_to_the_geniuses_war_of_love_and_brains/
I know a gender bender romcom called Boku Girl but it's so-so...
I found this really hilarious and adorable. (๑•ㅂ•)و✧
http://www.mangago.me/read-manga/secret_crush/
my current favourite is this one
http://www.mangago.me/read-manga/takane_to_hana/
I'm looking for romance and comedy set in high school.