Rei Kiriyama moves in to town, and his past is slowly revealed. Alongside battling opponents in shogi, he also wants to find that missing something...

Who was that mysterious figure who stole his mail? And Akari's job is what?! Tune in as we continue to explore Rei's past.

Rei must pick up Momo from kindergarten. Nothing can go wrong with doing this errand, right? Unfortunately, this leads Rei to remember more of his past.