The Witches of Adamas manga volume 4 features story and art by Yu Imai.

After Yukinari’s extra-hot summer break, his new semester brings a surprise: head witch Shizuka is the new principal, and dozens of lewd witches are gathering at the academy! Yukinari teams up with other Adamas-afflicted men to watch each other’s backs–and crotches. Not even classes are safe from the sexy challenges coming their way!