Need help with girls in the middle panel. Two are mystia and wriggle, but the other ones? Komachi and Reisen?

Looks like them. Note scythe and the rabbit ears' pointedness.

can this be considered a charisma break, just look at remi there on the ground O.O

If we zoom in i'm sure Remi just pulled a Yamcha in bottom-right panel.

remi will be missed