This work depicts a tsundere cohabitation life with the younger childhood friend 'Nana', offering five days of erotic enjoyment through subjective footage. Nana, slender and beautiful, is irresistibly charming with her gap between her arrogant attitude and actions like crawling into bed because she's scared to sleep alone or bathing together in a school swimsuit. Especially, her lines during climax like 'If you're up for it, I'll do it for you' and post-ejaculation 'I actually like you' are incredibly cute. Yagi Nana shines with her matured femininity, featuring many exciting scenes. However, the limitation of angles due to subjective footage makes the changes in expressions and kissing scenes somewhat monotonous, which is a pity. Still, this work is packed with Nana's cuteness and sexiness, making it irresistible for fans of tsundere characters.