 Manabe is Machi Kuragi's older half-brother by their mutual father's mistress, and protective of her because she is still affected by their mothers' fight, now ended, to have their own child named heir.He has a girlfriend named Komaki Nakao (whom he calls "Meat☆Angel" because of her love of meat).Tayaka notes that they "practically live together" as their mothers are both busy with work.