Mitsuba Sangu, an experienced but rigid soldier, is introduced as the squad's fifth member. Her strict adherence to military protocol clashes with Yuichiro’s reckless, impulsive nature.

The squad is dispatched to Shinjuku to repel a vampire scouting party. This serves as a "baptism by fire" for the new recruits.

Mitsuba’s obsession with rules is revealed to stem from her own past failures where her recklessness led to her previous squad's death. This parallels Yuichiro's current behavior, creating a "mirror" effect between the characters. Production and Reception

After successfully contracting with their Cursed Gears, Yuichiro, Yoichi, and Kimizuki are assigned to Shinoa’s squad for their first mission. The episode highlights the friction and growing camaraderie among the group.

Fans often cite this episode as the moment where Kimizuki and Yuichiro’s rivalry begins to evolve into mutual respect, a staple of Shonen dynamics.

The episode's title, "New Family," reinforces the show's core theme. Yuichiro, who lost his biological and orphanage families, is forced to accept his squadmates as his new kin.