I didnt understand why we make Noelle stronger until I saw the aborted weird route slap. Thats why Kris and Noelle never went any further, she was too weak and just cried whenever Kris pranked her. Kris wants to prank Noelle but he also wants to be punished. The purpose of Weird route is to turn Noelle into Dess 2.0 so Kris can finally get the hoof up his ass he needs.