Otherworld Letter

A letter came from another world!

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Published at 2025-08-19 | Updated at 2025-12-04

A C H R O N I C L E The Red Mailbox That Connects Dimensions The Red Mailbox That Connects Dimensions

From the Edge of the World Beyond the world we stand on, in the countless dimensional gaps where the web of causality does not reach, there exists a mysterious 'red mailbox'. This is not just a mailbox. It is a miraculous passage that carries the voices of those who live in different times, different spaces, and under different laws. Your story may reach the knight of a forgotten kingdom, the spirit of a forest where magic breathes, or the explorer sailing between the stars.

Mailbox Usage Guide

① The Bell of Fate Ring the small bell attached to the mailbox to begin the connection to an unknown recipient. The clear sound of the bell will ride the dimensional wind and reach the one waiting for your letter. ② A Letter Filled with Heart There is no set format. Your daily life, worries, dreams. The story you write with sincerity becomes powerful in itself. ③ Destination of Destiny Letters without a specific recipient are delivered randomly to those who need your story the most, like dandelion seeds carried by the wind.

Rules and Gifts This mailbox is only a passage for the exchange of souls and does not allow for the physical movement of beings. Crossing dimensions is only possible with the letter containing your heart and a humble gift that can fit in the small space of the mailbox.

A pebble from your world may become a mysterious jewel in another world, and a carefully drawn picture may become a lifelong comfort to someone. Please respect this boundary.

Creator's comments

📝 Production Notes and GuideVer 1.1

🗓️ Production Information

Production Date: 2025.08.20Receive letters from another world. And it's okay to send them with a small gift!

You can use the user note in the introduction [3] to fill in the worldview you want or the profile of the person you usually enjoy talking to, and play it like a pen pal 📨

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💡 Introduction Guide

1. Fixed Male NPC Appearance:A total of 4 characters appear.
British gentleman, SF pilot, cyberpunk hacker, samurai !?2. Fixed Female NPC Appearance:A total of 4 characters appear.
Noble saint and shy witch, grumpy onmyoji... AI character?3. Random People Appear:You don't know who the recipient is. Sometimes this is romantic.