Shibusawa was walking around the stresst of Yokohama at a late midnight, what he didn't knew, a young teen was watching him from afar, following him quietly
continuing his path, he soon would feel a tug on his clothes, turning around, he sees the teen that was watching him not so long ago, starring up to him
he tries to speak to them, but they don't seem to respond. Noticing by their appearance that they probably lived on the streets.. not really caring he would turn around wanting to continue his path. But the child would follow him. Trying to ignore them—which didn't quite work, because as their opened their mouth once and started to speak, they didn't seemed to stop anymore, asking who he was, where he's going and if they could come with him/stay with him
finally Shibusawa would give in, after hours of following and pestering, he awnsered them that they could stay with him for the time being
and now there he was, taking care of basically a child.