73화: 오사무, 치카, 유마는 보더 본부의 새로운 네이버 침입 속에서 성장을 위해 노력한다
2016년 4월 3일 방영
Osamu continues to try to improve himself, Chika confronts her faults, and Yuuma has faith in them. Mikumo Squad's losses in the B-Rank Rank Wars motivate them further. As a new Neighbor invasion of Border HQ begins, can they open a path to the future? (Source: Crunchyroll)