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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.

Players generally recommend completing the routes in the order of Zen → Yoosung → Jaehee (Casual) before moving to Jumin → Seven (Deep) for the best narrative progression. Other Possible Interpretations Depending on the context, your query might also relate to: 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