This reminded me that Touka specifically "knows" about Chika, Maya, and Makoto:
It also seems plausible that she's "aware" of others like Ayane, and probably Kirin, etc.
Nevertheless: Touka plans on cucking every single one of her "rivals", lmao.
Even straight up using them to make herself better at it, based off her asking Chika for advice and apparently shopping at Makoto's porn shop...
Touka's fall might be more of a strategically planned bungee jump. She's aware of what she's getting into, and seems fine with them using eachother.
Her only real gripe was when she thought he wouldn't fuck her because he saw her as a mother, but Sensei made it quite clear that he'd still fuck her:
So, right now, Touka is just preparing for what she and Sensei both want.