Is this really the time to show up a polyamorous relationship to the MC, when she isn't even on board actually loving her friends yet, much less getting into a poly relationship? the timing is a bit awkward as well happening IMMEDIATELY after she gets confused about the two's actions.
I join those who wonder why the rain in Japan is so dire. When lived in the Pacific Northwest, many of us wouldn't bother with umbrellas, hats, or raincoats to deal with a typical rain.