Kazuma Satomi/Plot

B-Rank Wars Arc
Sometime during the B-rank wars, Kusakabe Squad, along with Katagiri Squad, were out of town for recruiting new members in other prefectures.

After they return from the business mission, Osamu takes up the chance to seek guidance from Satomi regarding his upcoming opponents, Yuba Squad and Ninimoya Squad. Later, Satomi is seen walking away with Saeki and Uno.

Away Mission Test Arc
He is seen acting as a judge, as with the other A-Rank agents not participating in the test.