Those who the Tamakoma Branch members happened to meet at a barbecue restaurant are Ninomiya Squad agents, their opponents in B-Rank Wars Round 8.
After getting back to the branch office, Osamu and the other members start developing plans for their final match.  However, a question posed by Hyuse to Chika creates a ripple.
Her little brother was kidnapped.
اختُطِف أخوها الصّغير
Ihr kleiner Bruder wurde entführt.
Secuestraron a su hermano menor.
Secuestraron a su hermano pequeño.
Son petit frère a été enlevé.
Suo fratello minore era stato rapito.
Seu irmão mais novo foi levado.
Её младшего брата похитили.