NACR-570 Drenched in a sudden heavy rain... Mio Nosaki, the older sister of my dreams who can't go home

Mio, the woman I admire who lives next door to me. - She came over to cook meals for my parents when they were traveling. - After finishing her errands, she went home without an umbrella in the heavy rain, but returned a short time later soaking wet. - It seems like I've lost my key. - Wet hair and underwear that was visible through the white blouse... - It just so happens that my parents aren't here today... - I couldn't hold back my emotions as I watched Mio drying her hair...