[Matsuba] Tsugi ha Mondai no doko [L -Ladies & Girls Love- 05] [CulturedCommissions]

Jun has it bad for her younger relative Minami, and a shared bath after dinner becomes her opening when she spins a bare-skinned anatomy lesson, fingers and tongue mapping every 'place of interest' between Minami's thighs under the flimsy pretense of teaching. Blushing through gasped instruction, Jun clings to her scholarly lie even as Minami melts under her hands, until the eager student insists on practicing back, curious fingers and tongue working Jun over while she begs her to go rougher. One borrowed bathtub, one shameless excuse about knowledge, and two relatives turn a study session into a lesson neither wants to end.