Jahy-sama wa asobanai! (E07)

The great Jahy is inspired to train her body so she can go up against the Magical Girl. While she does various drills with the boss, the latter casually drops the training once she reaches her weight loss goal. Reaffirmed that finding the mana crystals is the best and fastest way forward, Jahy redoubles her efforts there again. That's when a grade schooler passes by and offers Jahy help. (Crunchyroll)