Fan service has always been a topic of heated discussions within the anime community, the opinions varying from enthusiastic support to outright disgust. However, even those who find fan service tasteless have to reluctantly accept it as an unavoidable part of the anime culture. While many link fan service with series targeted toward mature audiences, hyper-sexualization of female characters was never exclusive to shows aimed at adults.
Source：https://www.cbr.com/kid-anime-with-fan-service/
