Seiten no Hekigan

Natsuki struggles to connect with others a month after moving to a new school, keeping her distance from classmates despite encouragement from her childhood friend, Haruka. One day, while eating lunch on the school balcony, Natsuki is surprised when a slime-like substance lands on her and transforms into a human girl. This unexpected encounter marks the start of an unusual bond between Natsuki and this mysterious new companion.