Fumizuki Kou was in the middle of another manga (ultimately 15 volumes) at the time he did "Itadaki" in 2011.
"Umi no Misaki" (海の御先)
https://mangadex.org/title/266/umi-no-misaki
ran from 2007 to 2014 so maybe the mangaka felt that running two titles simultaneously was too much stress.