Five days of cohabitation with my cheeky childhood friend MIDV-708

Overview： I have a childhood friend who is younger than me. Our parents get along well,so I've decided to look after my childhood friend Hikari for five days while both of our parents are away on a trip. She gets into my bed because she's afraid of thunder,and she bathes with me wearing her school swimsuit because she's scared and embarrassed to be alone. Hikari is always making fun of me and is cheeky,but I can't hate her,so I'm constantly at her mercy! Is her naughty behavior while acting tough a sign of her affection? A subjective video of a tsundere cohabitation life!