Only the Ring Finger Knows (Japanese: その指だけが知っている Hepburn: Sono Yubi Dake ga Shitte Iru?) is the title of a shōnen-ailight novel series written by Satoru Kannagi. It was made into a manga illustrated by Hotaru Odagiri, which has been licensed in theUnited States by Digital Manga Publishing.

In the school that Wataru Fujii goes to, when one wears matching rings on their right middle finger it is a sign of friendship, a ring on the right ring finger means single, and to wear matching rings on the left ring finger means a couple. One day Wataru accidentally switches rings with the very kind, handsome, popular senior, Yuichi Kazuki, because for some strange twist, their rings match. For reasons that Wataru doesn't understand, Yuichi becomes uncharacteristically mean to Wataru. After this strange incident, Wataru and Kazuki happened to meet more often, starting an electric relationship around the matching rings. Wataru starts to wonder why Yuichi's mood towards him switches to sweet-teasing to evil: is it because he just can't stand him or is it because he actually loves him?

This meeting of two students that everything seems to oppose, will led to the birth of an unexpected secret that only the ring finger knows.

Bởi vì tớ rất yêu thích truyện này mới đi tìm từ nhiều nguồn khác nhau.

Tất nhiên là tớ đã up lên mà chưa xin phép tác giả, người dịch cũng như người đăng. Rất là xin lỗi. Nếu có ai phiền lòng, xin để lại lời nhắn, tớ sẽ tiến hành xóa truyện.

Bản lưu này được để chế độ Cá nhân. Hy vọng sẽ không ai đọc được dòng này. Còn bạn nào đọc được thì :3 yên tĩnh mà đọc trong thanh bình nhé.

Du.

Ngày lành.