After Airi went missing for two whole days, Oto finally finds her collapsed at an old abandoned factory. This is the same factory that Airi and Haruto ran away to when they were children. Even though it's run-down, this factory is Airi's dream place—the place she told Haruto she'd protect for him... as his bride!
— Description from Comic Vine community (comicvine.gamespot.com).
