|Minazuki Rui水無月 涙|
|Visual novels||Main character - Tsukitomo. - TSUKIUTA 12 memories -|
|Voiced by||Aoi Shouta|
Rui comes off as innocent and naive, to the point that Shimotsuki Shun has (somewhat negatively) influenced his way of thinking. However, he can also do rather unexpected things whilst maintaining a straight face. He possesses a unique worldview, which makes him nonreactive to things such as scary stories.