[potchip]

Hah..you guys got sucked into the romantic part of this romantic comedy..

As it currently stands, things that pleases Sena, in ranking:

1. Able to do XX+OO to Kobato
2. Yozora become submissive to Sena
3. Able to step on Yozora
4. Be praised by Yozora
5. Be merely acknowledged by Yozora
...
Somewhere down the list is Kodaka.

As for Yozora, it goes something like this:
1. Back to 10 years ago
2. Cats
3. Kodaka begging to resume past friendship
4. Special friend status with Kodaka present tense
5. Turn Sena into Meat
....
Somewhere down the list is current (actual) situation with Kodaka

So in a way they've found an equilibrium of sorts..