Yamada-kun and the Seven Witches Vol. 16 (Kodansha, 2018)

A New Witch in Town -- Just when Yamada thought his witchy woes were over, the Student Council discovers that there's a whole new set of Seven Witches afoot…and a mysterious, new one is bewitching students with an unknown power! Shiraishi soon falls under the witch's spell, and as a result, tells Yamada that she wants to take a break from their relationship! Desperate to discover the witch's identity-and win Shiraishi back-Yamada, Odagiri, and Kurosaki head towards the Student Council's old, secret reference room to search for clues, but it may be a task easier said than done…