[Hisahide can be found strolling through the various corridors in Odin House, examining everything with a keen eye. Be it the architecture of the place or some ornamental knickknack, he seems to be absorbed in what he does. You are of course free to ask what he's doing or what he finds interesting about the wallpaper but be prepared to get some longwinded and possibly tl;dr answer.]
Corridors mostly!