Tenchi Muyou! Manatsu no Eve

A girl named Mayuka suddenly arrives, claiming to be the daughter of Tenchi, causing surprise within the Masaki family. The situation leads to turmoil as Washu investigates Mayuka's origins, and the others adapt to her presence. Her arrival has consequences tied to the past, placing Tenchi in peril. To resolve the issue, Tenchi and Ryoko must journey into the domain of a demon named Yuzuha, though the mission proves difficult.