Definitely Akatsuki, she's holding her hat in her hand. She also has black hair, while this artist draws Ikazuchi with medium grey hair (compare 3rd panel of post #1733117).
Fun fact; the artist got the characters mixed up, Mikuma is very unlucky, but Mogami is the clumsy one.
W-what is it now?Mogamin
Mogamin!Medium DamageWHY!?But whenever I see those two...She's not doing it on purpose, right?Mogamin and Kumarinko sure do get along well.They're always on the ground at half damage.I'm sorry I'm so clumsy, I'll be careful from now on, okay?