I quite like this manga, but the approach to suicide bothers me. People who kill themselves have decided, maybe only in that moment, that the suffering of being alive is too great for them. Being at that point is punishment enough, and forcing them to feel the suffering of others on top of that... It felt tone deaf to me. It centers other people's pain, and kinda shames people for being suicidal: "Look how much your suffering is hurting other people". That doesn't help irl.
A foundation of BDSM is CONSENT and it's a spit in the face for them to use dom/sub terms and dynamics as a way of forcing a character into sex.
Not sure if you've come across it yet, but Aporia (pretty sure it's this one) is fantastic about BDSM and consent. If you're looking for a BDSM yaoi, that is.
Thank you for the recommendation! I'll check that out