Ecstas Online

Kakeru Meguri, a second-year student at Minami Myojin Public High School, plays a VRMMORPG under the character name listed in the title. One day, a player appears before him—revealed to be his classmate Ririko Asagiri, known for her popularity and beauty. She believes defeating the demon king will allow them to return to the real world, while Kakeru understands that death in the game results in the permanent loss of a player's consciousness. To protect someone important, he wields the powerful, forbidden ability known as "Adult Mode." The series was discontinued following the death of Kakashi Oniyazu on February 2, 2019.