Can someone suggest a good yaoi komik jepang please?

Yep, I'm going to be super specific about what I want.
WOULD LIKE (does not have to include all):
Bishonen
Teenaged atau Older Main Characters
Yandere
CAN NOT HAVE:
Incest
Shotacons
Extra Quick Note: I don't mind if it's a soft story-based komik jepang atau a smutty 18+ manga.
Please can someone suggest a good one?
Thank you~