Hinata Asahi is a high school student who lives alone, with only her teddy bears for company. Her life takes a more exciting turn when the handsome Shirou Asou moves in next door—not only is he quite cute (despite being much older), but he is also her new teacher! Hina harbors a slight crush on Asou-sensei, but when the older man appears to take an interest in her as well, is it a forbidden romance or something else?