Tokeijikake no Apocalypse

In a skyless city buried like an underground box, the 'magic fire' illuminating the ceiling serves as its power source. The protagonist, tasked with receiving the fire's ember during a city festival and distributing it among the people, encounters a mysterious man a month before the event. He gives her a single rose, and that night, strange dreams begin. This story starts at the 'bad ending,' as the girl repeats time over and over, searching for a glimmer of happiness. The 'box of the future' has opened—follow her journey to discover what future she can reach.