According to the pool description shouldn't it be only kyou_mo_ichi-nichi?
Posted under Tags
As the creator of that pool, I have a concern about converting it to a tag. The phrase "Kyou mo ichi-nichi" is so common (it just means "today as well") that artists do not use it in a consistent way, not just in the sense I described in that pool.
For example, the phrase is used in post #3653998 in conjunction with Ikazuchi's dialogue to say "Good work today as well". On the other hand, Hatsune Negame puts the phrase to their daily illustrations that seem to be inconsistent (hatsune_negame commentary:今日も一日).