The arrows in the fourth panel.... What do they signify? Looks somewhat like the 236B/C (Iku's drill clothes attack... forgot the skill card name. It's my favorite) but I know that could hardly be it.

Pointing to how long her hair is I suspect

its the drill card thing. probably habitual to use it when that close

Oh, nice. This comic remembers that Iku and Tenshi originally didn't have anything to do with each other. Scarlet Weather Rhapsody was the first time they really met.

Lick_King said:
The arrows in the fourth panel.... What do they signify? Looks somewhat like the 236B/C (Iku's drill clothes attack... forgot the skill card name. It's my favorite) but I know that could hardly be it.

dragon fish's strike, though it could be referring to her alt skill card dragonfish, the able swimmer; that description has her "synchronizing her body movements with the wind"