i have a younger childhood friend. our parents are close, and while they are away on a five-day trip, i am entrusted with my childhood friend rena. she acts coldly but is scared to sleep alone and comes into my bed, and she is scared and embarrassed to bathe alone and comes to bathe with me in a swimsuit. she is spirited and arrogant, but i can't hate her. i am completely played by rena, who is tsuntsun and does lewd things. is this a sign of affection? a subjective image of a tsundere cohabitation life.