Witchriv is a Japanese manga series written and illustrated by Hakuri. It was originally published as a one-shot on Shueisha's Shà Ânen Jump+ service in July 2025 under the title Meririrarariri, before beginning serialization on the same service in October 2025. Its chapters have been compiled into a single volume as of January 2026.
Nona Ewin, a mage, lives with her mother Lancia in a town under watch by the Bureau of Magic Surveillance. After visiting her friend Lovi and repairing her glasses, her actions catch the attention of the Bureau. Under threat, Lovi reveals that Nona is a mage, leading to Lovi and her parents being killed. Lancia, who had been hiding her powers herself, escapes with Nona, destroying the town in the process, only for the two to be separated. Nona finds herself locked up in a Bureau base, where she meets Miramira, a fellow captive. The two work together to escape, with Nona looking for Lancia and Miramira searching for her older brother.
The series is written and illustrated by Hakuri, who previously published a one-shot titled on Shueisha's Shà Ânen Jump+ service on July 21, 2024. Meririrarariri revolves around an aspiring witch named Merrily, whose life changes after an encounter with a boy named Danka. It was later revised for serialization, being retitled Witchriv and featuring similarly designed characters but a different story and premise. The series began serialization on Shà Ânen Jump+ on October 23, 2025, with it receiving a simultaneous English release in Shueisha's Manga Plus service. The first volume was released on January 5, 2026.
The first volume featured a recommendation from manga artist Kazue Kato. Tulisha Srivastava of ComicBook.com praised the main character and the story, describing its first few chapters as "incredible".