She would not take afternoon breaks...

She'd work all-night if not monitored...

Her eyebags had no trace of fading away...

Knowing that she wouldn't rest even when told to, Tonegawa had another plan.

In the middle of the "Urban Legend Incident" at the surface,

Satori's little sister "Komeiji Koishi" was hard at work, involved in the Occult Ball battles.

"Why don't you go watch your little sister's fights now and then?", he proposed.

In those periods where she went to see her sister, she did not do her work.