清楚斑目的真意後覺醒了的祐介，自願申請加入怪盜團。蓮他們發出預告書，為了盜出斑目的寶藏而侵入宮殿，但在那裡等待他們的，是攜帶著“描畫出抱著嬰兒姿態的《小百合》”的陰暗斑目。

從虛偽的自我中擺脫並覺醒了persona的真，作為怪盜團的參謀成為一員。蓮他們為了讓瞄準年輕人敲詐錢財的犯罪集團的老大·金城悔改，再次潛入宮殿之中。

The politician who was the mastermind behind all of the cases has been successfully reformed by the Phantom Thieves. However, the public’s reaction was not as expected. In order to eliminate the world’s distortion and enforce the justice he believes in, Ren proceeds towards the final battle along with the Phantom Thieves of Hearts.