Is MamaYuyu Finished? Yes — Complete in 4 Volumes
Yes — MamaYuyu is complete. It ended in Japan with 4 volumes; the final volume came out in August 2024. The serialization ended in 2024 (issue #19/2024 of the magazine).
Everything below reflects the Japanese edition — the source of truth that runs months or years ahead of English releases — computed from official publication records.
Volumes in Japan: 4 (latest: 魔々勇々 4, 2024-08)
Next volume in Japan: not yet announced in Japan.
Status: Yes — MamaYuyu is complete. It ended in Japan with 4 volumes; the final volume came out in August 2024. The serialization ended in 2024 (issue #19/2024 of the magazine).
Serialized since: 2024