The main lead lives in stranger people's houses when they are gone and meets a woman. This is the only similarity between the two but it's too specific and similar not to mention

girl becomes a fan of a new band and gets to meet them and eventually gets very close with the vocalist. so far i think it's the closest i found of something that has a similar atmosphere but unfortunately it's not focused on the friendship of women like nana. I still think that the fans might enjoy it