[quote=@Masaki Haruna]
Just a question, how strong is a cryokinetic esper at level 4? I played a level 5 version of it before in my old to aru RP. I'm just being careful here, what can it do/can't do as a level 4?
[/quote]

I'd say, you're able to cool things, thus being able to generate ice using the air misture on a large area (a mile or so, perhaps?),  other than that you could freeze things to temperatures of liquid nitrogen. How abut that?