Rena is my affianced bride? I have to decode this letter! The idol Rena Nitta is my affianced bride? She said she is keeping a letter from my parents oversea. but it’s written in code....I can’t read it unless I crack the code! What on Earth will become of me?!! Tatsuya opens the letter and found it's encrypted and difficult to understand. The beginning of the letter starts with a hint: “ODD,” wri