Hayasaka Secret Leecherous Doing

A parody of Kaguya-sama, Love is War produced by hentaibros.
Hayasaka is a loyal private servant in Shinomiya Family, everyday shes busy baby-sitting Kaguya and thus she almost have no time to study.
However, despite almost having no time to study she always gets a good grades in school, she could be considered as one of top student in Shuchi’in Academy.
Whats the secret behind her good grades ? Sex is always the answer.