- Voice Actor (CV)
- Yoshitsugu Matsuoka
- Gender
- Male
- Age
- 16
- Birthday
- July 10
- Role
- Protagonist
- Identity
- A high school student moonlighting as a light novel author under the pen name Masamune Izumi, serving as the sole guardian of his stepsister Sagiri
Personality
Caring and considerate
Highly responsible
Hardworking and dedicated
Devoted sister-complex
Emotionally oblivious
After losing both parents, Masamune shouldered the family's burdens alone — balancing schoolwork, novel writing, and caring for his reclusive stepsister Sagiri. Everything changed when a startling coincidence revealed that his long-time anonymous collaborator, the elusive illustrator known as 'Eromanga-sensei,' was none other than the girl living under his own roof, reshaping their bond in ways neither could have anticipated.