❝ I made a promise to protect you y/n ❞ ❝That was years ago ❞ ❝You know I don't make promises to break them ❞ - After reuniting after years apart Chishiya decides to take y/n to their favourite arcade as children, however, after playing one game everything changes too quickly. Shocked to discover that once the electricity goes in their shooting game stall all the inhabitants of Tokyo and presumably Japan are gone and the electricity seems to be cut. They're trapped together in Borderland with no knowledge on how to escape.

!!𝐒𝐌𝐔𝐓¡¡ ┌ ───˳೫˚∗─┐ 𝚎𝚛𝚎𝚗 𝚏𝚒𝚗𝚍𝚜 𝚘𝚞𝚝 𝚊𝚋𝚘𝚞𝚝 𝚢𝚘𝚞𝚛 𝚜𝚎𝚌𝚛𝚎𝚝 𝚜𝚒𝚍𝚎 𝚑𝚞𝚜𝚝𝚕𝚎 and uses it 𝚏𝚘𝚛 𝚑𝚒𝚜 𝚊𝚍𝚟𝚊𝚗𝚝𝚊𝚐𝚎 └───˳೫˚∗─ ┘