Tooi Tooi, Yakusoku -Tune of Memories-

It’s been 2 months since Gen’s close friend Kotone passed away from sickness. All that’s left from her is a letter asking him to go treasure hunting together. Along with it was an old map. Since it is his final promise with her, he sets out on this journey to find something precious.

[From Hau~ Omochikaeri!]