[Ishigaki Takashi] Ecchi na Onee-san-tachi ni Onsenyado de Hokakusareta Ken (Mahou Shoujo Lyrical Nanoha)

Fate Testarossa and Nanoha Takamachi, two voluptuous onsen patrons, return to the steamy bathhouse where a chance encounter with a shy young man ignites a heated threesome. The story unfolds with teasing dialogue, intimate embraces, and explicit acts that explore the contrast between their confident, dominant personas and the vulnerable, eager responses of the male partner. As the heat rises, the trio navigates desire and consent in a sensual, erotic tableau that blends the relaxing atmosphere of the hot springs with the intense passion of a forbidden encounter.