Fujinomiya Atsushi

He is the next head of the Fujinomiya family, a family with a status second only to the main Itsukino family.
Intelligent, cool-headed, and possessing a charismatic aura belying his age.
A childhood friend of Naoya and Ichika, he serves as the commander of the purification squad, which performs purification rituals.
Due to the feud between the families, he tends to keep his distance from Naoya in normal times, but as a child, he was a timid boy who clung to Naoya and Ichika.

While he performs missions alongside Naoya, Ichika, and the others on the surface, his true feelings remain hidden beneath his cold, ostentatious glasses.