Okay so I was on myreadingmanga and I read this one manga that really stuck out to me ut I cannot, for the life of me, find it. It's completely smutty and kinky so brace yourselves.
So basically there's this college/high school student who lives next door to three (or 4) younger kids. They like to come over to his house and basically sex him up. There's bondage and I think sounding in this manga? Towards the end, the kids get possessive because they saw him in a video having sex with his friend.
If you could help me find this, it would be great!

Otonari no o nīchan ga bokura no M dorei ni natte kuremashita

waaaah thank you!