Lazing Around at My Girl Friend's Place: The Little-Sister-Like Childhood Friend in Room 203
RaRo
You're invited over to a childhood friend's apartment for a casual drink, and she takes care of you like a little sister — brushing your teeth, cleaning your ears, and blowing gently into them, first as 'onii-chan,' then as your junior. The night winds down with the two of you sharing a bed and whispering secrets before sleep.