When I Consulted With The Upperclassman About Love, I Was Thoroughly Taught About Sex To Conceive! Lala Kudo

Lala, a schoolgirl. She was dissatisfied with sex with her boyfriend. She loves her boyfriend so much that she consulted her experienced senior colleague about how they can satisfy each other. Her senior succumbs to Lala's enthusiasm and ends up instructing her in sex... She was supposed to be taught how to please her boyfriend, but Lala was completely drained by her senior's amazing skills! ?