Huh... looks like the Japanese versions are the primary now starting from Day 4.

The first two arcs were clearly typeset and (hand)written in Korean before translating into Japanese. The third arc is unclear. This arc looks like it's (hand)written and typeset in Japanese first before translating into Korean. Especially the meme-heavy pages that rely on Umamusume fanbase in-jokes (and game mechanics). Typesetting for Korean also looks more awkward now.

The Japanese text also gets considerably more fluent starting this arc.

Originally I planned to just put the Korean version... but not I am less sure.