Kaijin X no Yokokujou

怪人Xの予告状은(는) Unknown에서 개발한 비주얼 노벨입니다. 출시일: TBA. 플레이어 평점: N/A/10. Nao Igarashi, a former writer turned housewife, her husband is away on business overseas. Around that time, she meets Saeko Yuuki—their neighbor an...