過去に何度か登場したあくの強い非公式ママさん大集合

Katusha's mother is not easy to come by.
Darjeeling's mom said. Let's play with 'aunts' until Katusha-chan's mom comes."
By "aunts" she meant mothers other than herself.

It's a large group of non-canon mamas that have appeared in prior episodes.

English:

Katusha's mother is not easy to come by.
Darjeeling's mom said. Let's play with 'aunts' until Katusha-chan's mom comes."
By "aunts" she meant mothers other than herself.