I have no idea what's going on, but Topless Patchy and reference to Sakuya's... items, has me interested :-P
Uhyoo---You pervert...The "lacto" root in the word "lactose" means "milk".Lactose is the same sugar that makes up both cow's milk and human breast milk.LactoseLacto-, milk...
No way!Milk girlLoli with huge titsMental imageWhich means...!
Patchouli is Gensokyo's ultimate life-form,
the Huge-breasted loli!Things like that Head Padder are nothing to talk about!!MilkLacto-girl
locked girlAnd thus, the deviant was eliminated quietly and without incident.And they all lived happily ever after.
"medetashi, medetashi" is a traditional ending to Japanese fairy tales and such; with just one, it can have different meanings, but this is obviously what the mangaka was going for here.