YMMV / Corpse Party if...

• Angst? What Angst?: For all his Survivor Guilt, Yoshiki's reaction when he finds himself back in the cursed schoolhouse is remarkably subdued. He also doesn't show any reaction to seeing the anatomical model again... until he finds Ayumi's corpse.
• Crowning Moment of Heartwarming: After finishing the if: PAST END version with Akari managed to return to the real world, the credits will play and then the title screen will change from black colour into white colour with the picture of Yoshiki and Sayako walking together.
• Tear Jerker:
  • Yoshiki's various encounters with the dead spirits of his friends.
  • Yoshiki's spirit giving Akari a final push as she leaves Heavenly Host. It's sadder in if: PAST END, when she breaks down in tears upon realizing he didn't make it.
• Took a Level in Badass: Yoshiki Kishinuma. He went from a teenager who skipped classes a lot, left Ayumi behind to die so he could live, got possessed by The Girl In Red and almost harm Satoshi, and unable to save Sayako from Ayumi's wrath. Eventually he grew into adult who sacrificed his own life so Sayako could pass on to afterlife and Akari managed to return to the real world.
• Unintentionally Unsympathetic: Ayumi in if: PAST END. After Akari finds out that Yoshiki died, she understandably starts crying. Ayumi mocks her for this, calling Akari "a brat that whines when things don't go as she wants". However, not only Ayumi was a whiny girl in the original Corpse Party, always complaining about being forced to team with Yoshiki, but she killed Sayako in cold blood because she couldn't stand seeing Yoshiki happy and moving from his friends's deaths. Thus making Ayumi the petty, arrogant, and hypocritical one.