omg I'm sorry I just immediately explained without asking what manga are you talking about..am I correct that this is the manga you're referring to??
https://www.mangago.zone/read-manga/itou_san_kuraka_sui/
glad we're actually on the same page. Its not quite advisable to read the prequel chapter but it somehow explains how he was captivated by kyosuke
I wasn't also prepared to see the prequel chapter so I just scanned through it but have you seen like the extra chapters of it? I think its not available here but on mrm
Also, I don't exactly remember how I found out about this but Itou and Kyosuke have 12 years age gap. I forgot what chapter they mentioned their age
I feel not persuading myself to read it, I only read fluff but can be some "little" problematic" BL manga. I already know the original story (scan it cause it has some angst), but I didnt know that there is a prequel so I was shocked and wanted to only know some spoilers instead of reading the prequel ╥﹏╥
CONTAINS SPOILER
I guess I'll have to spoil you some more. In chapter 2 or 3, there was a moment where Itou met young Kyosuke when he had a mission to assasinate the one abusing kyosuke that time. He decided not to kill kyosuke as well as it reminded him of his black kitten when he was a kid
Fast forward>>
On the day when Kyosuke thought he met Itou for the first time...when Itou went to his mission in that bar where Kyosuke was, he immediately recognized him thats why he chose him as a cover for his mission
there's a sidestory that follows the main story, they're titled: Itou-san: parallel world, Itou-san:refrain, and itou-san: never gone.
Is this similar to totally captivated? where Itou and the master hadnt a penetration? and they had penetration, then who is the top or bottom? (I apologized for asking the positions even if this is a sad story)