After a draining December, Sakuta is quickly nearing the end of his second year of high school. Since Mai is a third-year student, they don't have much time left together before graduation rolls around. Meanwhile, his sister, Kaede, is slowly but steadily venturing outdoors again. Just as she begins to find her footing, she announces her most ambitious goal yet—attending her brother's high school! Sakuta knows better than anyone how difficult this will be for Kaede, and he's ready to support her however he can. He's just not sure if that's what's best for her...or what she really wants...

Yuhi Yugure and Yasumi Utatane, high school classmates and co-hosts of a weekly radio program, paint a picture-perfect friendship for their listeners. Yet, in reality, they couldn’t be more different. Their off-air dynamic is a whirlwind of chaos and insults. As their tumultuous relationship unfolds, they navigate the turbulent waters of friendship and rivalry in the cutthroat realm of showbiz.

Seven years after humanity was devastated by a major disaster, a beacon of science and prosperity rises in Kamitsubaki City. But lurking in its shadows are Tesseractor monsters born from human darkness. Only the Witchling, five girls with Song of Purification, stand against them. With every note, they fight, not just to protect the peace of the city, but to heal a broken world.