Events: During PoA: Schoolhouse Rump
- Complete a specified number of event tasks.
(Refer to event page for details.) Events: During Cumback Contest (Select dates only)
- Win from ranking rewards in special event contests.
(Refer to event page for details.)
About: A rather shy and quiet young man, most wouldn’t expect Seiji to be one of the most skilled members of his class. Always studying the people around him, he’s easily able to accurately pinpoint a person’s pleasure spots and, despite his appearance, is able to quickly take control when desired, ensuring his sexual partner is only ever the dominant one so long as he wants them to be.
Seiji has the same hairstyle as Nagisa though it's orange, and his uniform is the same style but different colors. Unlike Nagisa, Seiji is much more muscular with visible abs. Both are quiet guy but have hidden skills that truly reveals their true strength, but while Nagisa's hidden skills is about assassination, Seiji is more on sexual prowess, and instead of a gun, he uses dildo. Though both have their favorite methods, silently attacking enemy weakness to win.
