[Hertro] Gem's Daily Sex Life (Houseki no Kuni)

A shy visitor asks "Who is there?" and discovers a meditating figure, prompting a teasing exchange that leads to a close, intimate moment where a soft new organ is inspected and adjusted, while the subject later awakens angry yet satisfied, as the experiment report notes the surgery's success. The characters tease each other about the bizarre results, with playful remarks underscoring the surreal, erotic tension.