Can you maybe recommend some (canon if you can find it) yoonseok where they invite one of the maknae line to mess around with them??
Some of these were a bit difficult to find but I think most of them fit the prompt well enough (although almost none of these are canon, sorry). Enjoy~
Room for Three by YumeBaah (Yoonkookseok, 18k, rated M)
Cherry Pop (Don’t Leave a Drop) by friendly9host (orphan_account) (Yoonkookseok, 12k, rated E)
Mr. Presidents by friendly9host (orphan_account) (Yoonkookseok, 26k, rated T)
in(adequate) by gaslight (Yoonkookseok, 1k, rated E)
Three’s company by monstersandmen (Yoonminseok, 8k, rated E)
Cravings by driedgrass (Yoonminseok, 3k, not rated)
Just Ring My Bell by melsmessylife (Yoonminseok, 3k, rated E)
We’ll make it work by solkwannie (Yoonminseok, 3k, rated T)
Gettin’ Down with 3P by theskipper (Taegiseok, 31k, rated E)
it’s the summer heat by sugaretreat (Taegiseok, 5k, rated E)
~ Admin LE