TUNNEL No. 73 is a place to present Koyu's games and CGs.
The contents of the products are for adults.

Currently, I'm making an English translation of my own work.
my works translation is done by a translator.



Scenario writer



Sorry, I am not so good at speaking English.
It may be difficult to read or reply can not be returned.

© 2018 TUNNEL No.73 / Koyu

All the works are fictional. There is no relation to actual persons or organizations.
And all the characters are more than 18 years old.
Reproductions or redistributions of texts, images and contents from within this site is prohibited.