ONLY END (80 points)

Follow the entire guide as if going for Taiga's Normal End.

If you saved after getting all the 5 key items then just reload from there.

Proceed until the very last choice when you're fighting Kitamura.

Pick Separate them somehow (Will be locked if you don't have the Santa Shorts).

You'll get the bad end to Taiga's route or Kitamura's End since the conclusion isn't actually bad.