Sanshaku tamashii

There's a internet suicide room in Japan called Life Club where strangers get together to discuss their plans on how to end it all. Four members of this group ally with a mission: they are going to use explosive to snuff out their lives. However, at the moment of the explosion, something unexpected happens; the four find themselves thrown back to just before the moment they detonated the device. So they try again. And again. And again. Something is wrong and the group must figure it out so they can be allowed to perish. In a big explosion. (Fantastic Fest)