Each One's Determination

Short Summary
''Yūma and Replica continue to tell Jin and Osamu about Yūma's past and Calvaria's against Spinthir, explaining how Yūma's father Yūgo sacrificed his life to create Yūma's Black Trigger. Afterwards, Replica asks Osamu to give Yūma a new goal, and then Shiori then tells Osamu about Chika's decision to join Border, and Osamu and Chika discuss it. Osamu then decides to invite Yūma to form a team with him and Chika, seeing her determination, and Yūma accepts with the condition that Osamu is the team captain. They then go back to Mr. Rindō's office to file their enrollment, where they find out Jin foresaw that.''

Adapted From

 * Chapter 20
 * Chapter 21