(English may be bad, It's not my language sorry)
I remember that I have read or watched a comic or a video (I'm 90% sure it was a comic, thats why I ask in this subreddit) where the guy fucks all 5 girls. If I remember correctly it starts with 2 girls and then each one come in the room, undress and joins the action.
I also remember a very particular scene : Itsuki comes into the room with a hamburger and then joins everyone.
I searched on my own for a long time, I even asked google AI to help me and they said that this was a very popular comic named Gotoubun no Hanayome - Five-Sevenths by Aisouwara (I don't know if these informations are correct) but even with the title I couldn't find it
So if anyone knows what I'm talking about please let me know
Thank you