yeah wait is it just triggered by lamp quest? cause when i did it i didnt find anything new? like when i do the lamps does sakurai household get replaced or should something else happen on the asylum map
Yes, it's triggered by the combine lamp quest. Karasuyama currently has two quest. There are 6 animations with Hinata and 1 animation with Shizuka. There are also two items/equipment in this map.
And to return it back to sakurai map. go to Asylum > turn off the lamp.