Avsnitt 1

Upon visiting her friend, Run, to tell her she managed to get into her high school, Tooru finds her in a compromising position with one of her classmates, Yūko, who Tooru takes an instant disliking to. School soon begins, with Tooru showing hostility to anyone who gets too close to Run, and Yūko and their other friend, Nagi, making sure Run doesn't hurt herself with her aloofness . After school, Tooru admits she feels lonely being in a separate class from Run, but Run assures her that nothing's changed between them.