Is Our Wonderful Days Finished? Yes — Complete in 3 Volumes
Yes — Our Wonderful Days is complete. It ended in Japan with 3 volumes; the final volume came out in November 2019.
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: 3 (latest: 徒然日和 3, 2019-11)
Next volume in Japan: not yet announced in Japan.
Status: Yes — Our Wonderful Days is complete. It ended in Japan with 3 volumes; the final volume came out in November 2019.
Serialized since: 2018