Similar to the Kaiser chapter, you are given an unskippable chapter where you have to make a decision. What’s different from this one compared to the Kaiser chapter, you could trigger a secret hidden ending (non-canon).
0:25 – You need to mention Misora to trigger an option for the Misora ending
0:56 – Ending 1 (Eris) – Eris erase the entire world, leaving only KSKN and Eris
2:05 – Ending 2 (Yui/Canon Route) – Yui rescues KSKN, main story continues
3:46 – Secret Ending 3 (Misora) – Misora kidnaps KSKN and they spend the rest of the time together until the next world reset