The hushed whispers of their clandestine 'saimin' class echo through the hallowed halls of their prestigious school. Mikoto and her fellow students, driven by an insatiable curiosity and hormonal fervor, explore the depths of their carnal desires. Unbeknownst to them, their forbidden fruit bears seeds, their once-flat stomachs now stretching and rounding with the life they've created in secret. Their journey of self-discovery takes a dramatic turn as they confront the reality of their unexpected pregnancies.