At first glance it looks like a wholesome image about hijiri teaching students but then you read the commentary and its about hijiri teaching physical education with her as the learning material.

iori98 said:

At first glance it looks like a wholesome image about hijiri teaching students but then you read the commentary and its about hijiri teaching physical education with her as the learning material.

And given yohane's portfolio and the presence of what appears to be exclusively little girls, this is also implied_yuri