Here are a few important points before we get to the walkthrough:

• There are five total routes in this game. The characters with routes are Minami Kana, Kisaragi Mio, Shikishima Kyou, Toumine Tsukasa, and Nikaidou Shinku.
  
• Nikaidou Shinku's route is the true route of the game, and can only be accessed after completing all four other routes.
  
• Aside from the true route, route order is non-enforced, but the suggested play order is Kana --> Mio --> Kyou --> Tsukasa --> True.

1. Natsume Suzu --> The New Resident --> The Sealed Door

2. Kana --> Mio --> Tsukasa --> Ayumu

3. Shikishima Kyou --> Minami Kana --> Kisaragi Mio

4. Tsukasa --> Ayumu --> Kana

5. Kana --> Kyou --> Tsukasa

-Kana End-

1. Natsume Suzu --> The New Resident --> The Sealed Door

2. Kana --> Mio --> Tsukasa --> Ayumu

3. Shikishima Kyou --> Minami Kana --> Kisaragi Mio

4. Mio --> Kyou --> Kana

5. Kyou --> Kana --> Tsukasa

-Mio End-

1. Natsume Suzu --> The New Resident --> The Sealed Door

2. Kana --> Mio --> Tsukasa --> Ayumu

3. Shikishima Kyou --> Minami Kana --> Kisaragi Mio

4. Tsukasa --> Ayumu --> Kana

5. Kyou --> Tsukasa --> Kana

-Kyou End-

1. Natsume Suzu --> The New Resident --> The Sealed Door

2. Kana --> Mio --> Tsukasa --> Ayumu

3. Shikishima Kyou --> Minami Kana --> Kisaragi Mio

4. Tsukasa --> Ayumu --> Kana

5. Tsukasa --> Kyou --> Kana

-Tsukasa End-

Select "New Game" at the title screen after completing the above four routes.

-Shinku End-

Thank you for buying and playing Irotoridori no Sekai - The Colorful World! Come talk and discuss the game with us at the official Nekonyan discord server: https://discord.gg/nekonyan.

If you have any questions about the guide or the game in general, feel free to leave a comment below.