: It typically requires 200 Hourglasses to unlock. Players are generally advised to complete the three Casual Story routes (Zen, Yoosung, and Jaehee) first to understand the basics of the RFA .

: Compared to Casual Story, these routes delve much further into the secrets surrounding the organization, the character Unknown, and the overarching mystery of the Mint Eye . Available Routes :

: While the prologue and first day are similar to Casual Story, the chatrooms and Visual Novel Mode (VNM) segments are often longer and more plot-heavy.

appears to be a specific file naming convention or reference code sometimes associated with video archives or individual uploads of these story segments online, though it is not an official in-game term.

: Contains the most significant plot revelations and leads directly into the game's "Secret Endings".

: Focuses on his personal struggles and provides more clues regarding the character Rika.

In the context of the mobile game Mystic Messenger , is an advanced gameplay mode that focuses heavily on the game's core plot and "deeper" character mysteries. It is specifically designed to unlock the romance routes for characters 707 (Luciel Choi) and Jumin Han , who are not romanceable in the standard "Casual Story" mode. Key Features of Deep Story