@Draggador the fact that the shrine doesn't even exist means that the ones helping her is not some God being that reside in a shrine. It could be the case that that thing showed Miiko an illusion that she's indeed visiting a shrine so that she wished something from it (i.e making a contract)...
Feels bad man. Tsubaki with her pride, and Tadashi with his brutal stubbornness and honesty, they just hurt themselves, even tho they're clearly interested in each other