[Koyumean (Kazakami Sudare)] Yasashii Sister Onee-san no Himitsu o Saguttara Jitsu wa Succubus de Muriyari Keiyaku Saserarechau Hanashi | A story about a kind nun Onee-san who turns out to be a succubus, and being forced into a contract with her after discovering her secret [English]