アヤノの幸福理論 (Ayano no Koufuku Riron)

Background
"A story of memories left in the heart. 「Let us hope those days will continue forever.」"

- Author's comment (translated by Sunny)

Jin's 16th published song and 11th one in his Kagerou Project series.

It focuses on Ayano's past and the origins of Mekakushi Dan.

The song is featured on Jin's second album Mekakucity Records.

The song has entered the Hall of Fame within 5 hours after the upload and the Hall of Legends on July 19, 2013, making it Jin's 10th published work to do so.