One time K's said his favorite body part of Fuma were his 'abundant pectoral muscle' so... what about kenghum titfucking? Kei squeezing Fuma's tits (pectorals) from the sides to create a small can so he could slide his dick between them. This work w/ straight & yaoi kuma... also probably humjju w/ sub top euijoo begging to fuck his noona tits 🤔