[Mate-Tsu] Kugatsu no Botebara to Oneshota to Josou | September Baby Bumps, Oneshota, and Crossdressing [Castle TL] [Pixiv 92899255]

A teasing, erotic tale of a crossdressing younger brother who boldly declares his wish to start a family with his older sister, Onee‑chan, and she reveals she’s already pregnant with his child, while their intimate, blushing exchanges and frantic searches for a missing vibrator heighten the central tension. Set against school‑uniform aesthetics and playful, explicit panels, the album blends comedic romance with erotic desire, inviting readers into a provocative, heartfelt saga of forbidden affection and September‑time baby bumps.