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 voices that wield magic, stand against them. With every note, they fight, not just to protect the peace of the city, but to heal a broken world. (Source: Crunchyroll)

Eleventh season of Yami Shibai.

Second season of Hell Mode: Yarikomizuki no Gamer wa Hai Settei no Isekai de Musou suru.

Once upon a time, an unidentified enemy, the Unknown, suddenly appeared. The Super Evolutionary Railway Development Agency, had developed the Shinkalion, a robot that transforms into a bullet train, as a countermeasure against this threat. (Source: Official Website, translated)