Osamu is considering this suggestion when he hears the front door click in the same moment Kita does, and it catches him off guard. He's not usually home when his mom gets back, so he had no idea when to expect her. He looks over in time to meet his mother's eye, and winces a little when he sees the immediate concern on her face.

"What happened?" Are the first words out of her mouth, because she's been the one raising the twins since they were born and she knows. Osamu hitches his shoulders up defensively.

"Nothing, ma," he huffs. "Just fell."

She comes over to fuss at him for details. Then turns to Kita and thanks him profusely for looking out for her boys. And then she promises to look after Osamu, and invites Kita to stay for dinner, if he'd like.