Aisuru Hito no Kioku: Eien wo Chikau Greece

A newly married couple, Alexei and Bliss "Billie" Drakos, face immediate conflict on Speros Island when Billie reveals that her nephew, Nikolos, is actually their son from a night of passion before Alexei lost his memory after a fall. Alexei no longer recalls the event due to amnesia. Billie is determined to maintain their marriage despite the turmoil, while Alexei is unsure whether to accept Nikolos as his son or be drawn to Calisto, who is described as scheming.