I don't know japanese so this what I got from the japanese raws since I have the book. This happened in volume 3. Nasty, horny pos pedo creep teacher was trying to do something to uke in the infirmary by invading his personal space trying to kiss him or something while uke was uncomfortable asf and blocked that nasy bitch ass pedo teacher's fucking STD mouth and pushed him away, seme came and saw the whole thing and was furious as hell because nasty bitch ass pedo creep teacher just tried to sexually assaulted his honey with his fucking STD mouth. The audacity of that nasty bitch ass pedo creep teacher to say something to provoke seme so seme grabbed the nasty fucker bitch pedo ass teacher's shirt but uke stopped seme. He don't want his honey to get in trouble with the school. Also uke/seme's friend (one that nasty bitch ass pedo creep teacher preyed, groomed ) came with seme and saw the whole thing. That bitch ass nasty pedo creep teacher say something to the friend, I'm not sure, I am guessing about uke/seme or about him and he got mad so he kicked the nasty bitch ass pedo creep teacher's STD dick so hard after cursing and giving him a deadly look like fucking bitch, I am going to kill you, you fucking nasty pedo creep. He was so happy that he kicked that nasty pedo bitch teacher's STD dick and left with a smile. Damn right I would be happy too, wished he get beaten till he's bloody or get tortured for his crimes! That nasty bitch ass pedo creep left the school and didn't showed up in the story after that. I wished he go to prison and be locked away for his crimes! He's a fucking walking STD menace! ╬ ̄皿 ̄)凸
I remember reading this a while back and have to re-read to refreshed my memory. It was fucked up back then and still fucked up now after re-reading it.
I found the raws, only 5 chapter (completed). https://happytoon01.com/webtoon/title/8784