I don't really know Japanese, but I can put in some of these obvious sound effects that only require looking up a single character.

Also, lol at the Chen-larva-airplane-thing being the "papaa".

I think that's supposed to be Yukari in panel three on the left, and Momiji sees her doing well so she perks up. Gonna add the tag.

Huh.
Thouse larva..
WHAT ARE THEY MADE OF?

OH GOD !!! BIG BIRD AYA !!!
AHHAHAHAHAHAHAHAHAHAHA