Under the dedicated tutelage of their mentor Fuutarou Uesugi, the Nakano quintuplets start to make academic strides, despite facing hurdles on their journey to graduation. Amidst the chaos caused by their antics that sidetrack the tutoring process, Fuutarou finds himself drawn into their personal affairs, adding further layers of complexity to their dynamics. Simultaneously, Fuutarou uncovers potential ties between his past and one of the quintuplets, sparking a realization that opens up a new chapter in their intertwined histories. As emotions intertwine and grow, the boundaries between teacher and students blur, raising the question of whether their relationship will evolve beyond the classroom.