Deep Story is one of three gameplay modes (alongside Casual and Another Story). It is essential for players wanting to uncover the dark origins of the RFA (Rika's Fundraising Association) and the Mint Eye cult.
In this mode, you can specifically pursue the routes for 707 (Luciel Choi) and Jumin Han . Unlocking: It typically costs 200 Hourglasses to unlock. antiserum
Unlike Casual Story, which is more lighthearted, Deep Story focuses heavily on the overarching mystery, including 707's tragic past and his twin brother, Saeran (Unknown). Deep Story is one of three gameplay modes
While there isn't a specific item called "antiserum" in the game, "Deep Story" is a dedicated gameplay mode that allows players to unlock the "deeper" secrets of the plot. which is more lighthearted