I don't have a ready made list for this stuff and I don't actively seek them out unless I come across them by chance/recommendation since personally I'm not as into digging through the more fan service aimed stories to get to them (if you get what I mean (￣∇￣")) so I apologize for my small recommendation list here but the ones that I can think of off the top of my head:
>My son is probably Gay (as the title says)
>Hanayome wa Motodanshi (autobiography+as the title says)
>Araburu Kisetsu no Otomedomo yo (one of the characters is interested in another girl)
>Hidamari ga Kikoeru (two dudes)
>Otouto no Otto (two dudes, warning Creator's other works are heavily NSFW compared to this)
>I decided to fake a marriage with my junior (♀) to shut my parents up (two girls)
>Ganbare! Nakamura-kun!! (two dudes)
I hope you enjoy!
There's plenty of better stories that approach homosexuality but I guess this is aimed towards a more niche audience and need to remember not all stories are made for everyone and sometimes are meant more for someone in similar shoes.
Going off of only one chapter so far and personally a bit more grossed out with the older dude having such an age gap with the MC but atleast(?) they both seem to be consenting.. its someone else's relationship so not much else to say..
going to keep reading this as it updates cause I'm interested to see how this ends.