Is Nozomi a little unhinged? Suuuure. But BOY is he hot! And I just feel so much sympathy for him. I find it so admirable how he struggles with his trauma but demands others hold him accountable for his actions in spite of it.
I'm not sure why, but Mio feels like such a uke-coded seme to me. And I guess because Shun doesn't seem to particularly enjoy bottoming (and kind of seems like he does it out of obligation of being the "gay" one in the relationship...boy do I hate the trope of characters in a gay relationship being called "straight"...I digress) , I wish these two would switch at some point. Either way, Mio is such a pure bean. I really love his character development.
Eli is the ultimate sarcastic, aloof seme. He's watching out for Nico from the jump, but does it in the most covert, flippant way possible, which is perfect since Nico is prideful and probably wouldn't accept his help, otherwise. I adore his secret looks of concern. He's definitely an action over words guy and it's obvious he loves Nico SO much.
Honestly, Kawase would have every right to dislike Kurihara, but instead he worries about him and takes care of him. What a freaking sweetheart.
If you're looking for a seme who is a golden retriever in human form, this is the one!!!
Yondaime Ooyamato Tatsuyuki