Missing original publication date

[G.G.]

Might I trouble a kind librarian to add a date of first publication to this book (I read the paperback edition, ISBN 978-4-02-263104-6)? My copy--the first edition--was published on February 25, 2021.
Currently, the book shows up as date of publication "unknown" on my shelves.
If you've time, the Japanese profile of the author (伊井 春樹) might helpfully be combined with the separate English profile (Haruki Ii).
Many thanks in advance for your help!

[Arenda]

Original publication date added. Since the Kindle edition has a date of 10 February 2021, I've used that date.

Author profiles in a different language should not be merged.
But, the English profile can no longer be found, and it seems there are only Japanese editions, in which case there is no need for an English language author profile.

[G.G.]

Arenda wrote: "Original publication date added. Since the Kindle edition has a date of 10 February 2021, I've used that date.

Author profiles in a different language should not be merged.
But, the English profil..."

Thank you very much indeed for making time to add the original date of publication and explain the rule about author profiles. Much obliged!