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Starting it wih a drunk guy is sure meh but touji was given an out several times and he went ahead with it as he was sobering up so eh, and They had a convo on the stairs, kiyoto told him that just sleeping with a man to see if he can go through with it won’t give him answers about what he felt for yachiyo etc, he gave him all the warnings but touji is an adult and made his choice, and what was his alternative? Going after a now married man? He decided to try figuring his feelings out, exploring this new possibility he realized and at the same time made a step of moving on by being with kiyoto
Also yachiyo already figured it out what was happening between touji and kiyoto when he showed up at grandmas funeral, he connected the dots that touji is dating someone and this guy came all the way here for him means it’s him, he even talked to kiyoto as two people that love touji
And then touji didnt reject yachiyo for being a man, he didn’t even fully get exactly what yachiyo meant cause yachiyo deliberately didn’t explain to the point he’d fully grasp it, knowing he’s a bit dense he only said it out loud to get it off his chest, if he was actually trying to make a move he’d make his point understood to no question, touji didn’t realize yachiyo meant it in that way, never questioned whether he’d feel that for a Man himself and he had a gf at the time, so it’s not a “rejected for being a man only to be with another man” thing
They got hurt the most because of losing each other from their lives, not just cause their relationship isn’t romantic
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I am not saying Touji was supposed to pursue a now married Yachiyo. Just that he was very vulnerable in the moment because he was coming back from the marriage of the very guy he never even realized he had feelings for. He was just not in a stable position in THAT very moment. Not that he couldn't pursue and experiment with his sexuality with other people to understand what he felt for Yachiyo. Be that as it may, it's clear Kiyoto was the stepping stone anyway. It's clear the love interest here is Yachiyo and not Kiyoto. Kiyoto simply existed to push Touji to understand his feelings for Yachiyo further.
Honestly, no one in this is innocent at all. Kiyoto literally took advantage of a vulnerable person who he KNEW wasn't in any position to consent to him. Touji is simply with him as a rebound since he is still stuck on Yachiyo. Yachiyo tried to move on and tried to use his wife as a rebound too. Like, this is scum's wish but the characters are less shitty lol. Kiyoto isn't the sweety everyone is making him out to be. A drunk person can't consent and he should have known better.
Kiyoto is genuinely the character I get the MOST ick from. He could have advised Touji to not take such a drastic decision in the heat of the moment and refused his drunken advises but he doesn't.
I just know Yachiyo is going to be very hurt once he learns that Touji ended up dating a man when he rejected Yachiyo for being a man, ouch.