Shiranai Koto Shiritai no? The Animation – Episode 1 (ES)

In "Shiranai Koto Shiritai no? THE ANIMATION" Volume 1, the protagonist inherits his grandfather's struggling plastic model shop after the elderly man falls ill. Struggling to keep the business afloat, he is surprised when Risa, a busty regular customer and dedicated gunpla otaku, shows up offering to work as a part-time helper. Thanks to her strict yet supportive guidance, the shop successfully reopens. One day, while tidying up, the protagonist discovers his grandfather's homemade solvent. After closing, as he chats with Risa, she casually begins changing clothes in front of him. Startled, he accidentally spills the solvent all over her body! The chemical triggers an intense aphrodisiac effect—Risa's demeanor shifts to seductive and needy. Her body aches with uncontrollable desire as she exposes her voluptuous breasts, pleading breathlessly, "Please... calm it down for me?" What begins as an innocent accident spirals into a steamy, passionate encounter filled with erotic tension, affection, and explicit intimacy between the inexperienced shop owner and the alluring older woman. This OVA captures the thrill of unexpected lust in a model shop setting, blending hobby passion with sensual romance.