Anata Dake Konbanwa

Upon the passing of his grandfather, Yoshisuzu Shougo inherits an opulent mansion and its peculiar inhabitants. Residing there with the enigmatic maid Otosumi Youko, their bond grows intimate as they frequently engage in amorous activities. Yet, a mysterious phenomenon ensues; post-coital drowsiness unveils visions of a captivating girl named Reiko, whose portrait graces a wall within the mansion, deepening the enigma that entwines them all.