Into the Light, Once Again - Vol. 1 Ch. 33

[MangaDex]

 

[Ahodegozaimasuru]

Wish we stay on this wholesome phase a bit more, but I suppose it's also the right move to finally move on to the revenge plot.

 

[Azurus]

Isis is the goddes of life and magic in egyptian mythology. Isis and Iris are alot like each other, aside the magic part which Ceres is the goddes of "Magic" in greek.

 

[ClemCa]

In this case they mentioned a while earlier that Isis means rainbow in one of the story's language, so it's even more direct than that.