Oyasumi Sex – Episode 1 (RAW)

Akira and Yui live together in a mother-child family after their parents' divorce, with the serious and dutiful Akira taking on the role of surrogate father to care for his younger sister. He has always seen Yui as the crybaby who depends on him, cherishing his duty to protect and stay by her side forever. However, one morning, Yui innocently shares that a male classmate confessed his feelings to her. Hearing this shakes Akira deeply—he realizes Yui has a side he never knew, and the thought of her eventually leaving him causes an aching pain in his chest. Conflicted and unsettled by these murky emotions, Akira finds himself in Yui's bedroom that night. As she breathes softly in her sleep, seemingly unaware, Akira reaches out and touches her skin for the first time, crossing the line from brotherly care into intimate, forbidden territory. This marks the beginning of their secret nighttime encounters driven by pure yet taboo love, where sleep becomes the veil for their growing closeness. The episode delves into Akira's internal struggle between responsibility and desire, setting the stage for an intense sibling romance.