For those who want to learn codes and ciphers.

Mnet's successful reality survival show in 2016, now back with a new season! Produce 101 Season 2, Mnet's new reality boy group survival show - 101 trainees' profiles, updates on the show, and more! Highest Rank: #1 in Random 170517 | 170518

Moving to Pampanga to start anew, Lorelei Rios only wants to focus on her new life and live in peace. But when she crosses paths with the ever-mysterious Loki Mendez, she's suddenly dragged into a world of mysteries, changing her life in ways she didn't expect. *** Joining a detective club is the last thing on high school student Lorelei Rios' mind. However, after being pressured into joining the QED Club by the cold and mysterious Loki Mendez, she unexpectedly finds herself solving mysteries one after another. As they tackle cases and work to decode puzzles and codes, Lorelei realizes that her high school life will never be the same. But when lives and safety are suddenly at risk, can Lorelei and Loki find the courage to face the challenges ahead? Or will their pasts impact their present, causing them to lose focus and ultimately fail?

Precious Zills is a transferee from abroad she used to have a normal and boring lifestyle, but when she transfered in some University around Manila. Her life changed. St. Lucas is a school with a hidden secrets, behind those innocent and angelic faces there is a hidden demon in their bodies. A game that can change everyone's life, being strong can turn into being weak. It's your choice if you will fight and your choice if you choose to accept your defeat. Don't be deceived, they will surely get you.