Green flag couples:
Our Sunny Days
Honey Bear
Drunk Punch Love
Tomodachi Engagement
Boku-tachi wa Mada Aoku
Shima-chan Chi no Tsugai Jijou
Bad Friend
Romance, but Not Romantic
Ones that have only one minor incident exception:
Pink Heart Jam (second to last chapter)
Smyrna and Capri(first chapter)
A few questionable ones that I can think of from the top of my head, where there's characters that have issues, but aren't toxic to their partner and there's full consent:
Taming the Tiger
Mania
Sex Drop

can anybody give a list of yaoi's that dont have a toxic relationship or r*ape in it ╥﹏╥