Outbreak (アウトブレイク Autobureiku) is a story originally included in Higurashi Daybreak Original Soundtrack. It has had many official releases in various formats.
- Main article: Outbreak/Plot Summary
When the village of Hinamizawa is suddenly placed under lockdown by the government, the villagers begin rioting and killing each other as supplies grow scarce. The school club members try to escape the chaos and retreat to Okinomiya, but more problems arise.
- Main article: Higurashi no Naku Koro ni Kaku: Outbreak
The story was adapted into an OVA before the VN release with Hou.
- In the OVA, Irie is shown committing suicide by a gun in his mouth while in the visual novel he does not appear at all, his whereabouts instead said to be unknown.