Well I guess I could be Toshiro since he's a boy, and I've played him enough to be pretty good at him, but the problem than lies with you being both Lisa and Nanao and I don't really want to stress you out that much with characters.
I'll have him go to her. Something about him investigating some area of Rukongai that turns out to be her home. Hiyori is there too and the two soon begin arguing forcing Lisa to take action on them.
Glad you like that idea