Though Ryoji and Toru have been friends since the start of high school, Toru has long since fallen for his classmate with no sign of his feelings being reciprocated. However, one day their friendship is set to change when ladies’ man Ryoji confesses that he gets turned on whenever the quiet Toru is around. Now the teen finds himself tempted to give into the flirt’s increasingly persistent advances, but can he really enter into a physical relationship with his best friend and not get hurt while knowing that his love isn’t returned?
Wearing a ring holds a variety of special meanings. Wearing one on your right middle finger means you are single; matching rings on the right ring finger shows friendship; and matching rings on the left ring finger signifies a couple. Wataru wears a single ring on his right middle finger and never thought it was a big deal - that is, until one day he discovers that he wears the exact same ring as his hugely-popular upperclassman Kazuki. However while Kazuki's reputation paints him as a kind and friendly boy, he is nothing but cold and ill-tempered towards Wataru. Finding his senior to be little more than a jerk, Wataru finds the existence of their matching rings to be thoroughly annoying. As their paths cross more often, Wataru begins to question his true feelings, but why is it that the supposedly gentle Kazuki is only cold towards him?
Both of these are one volume shounen-ai tales set in schools. While Desire is more explicit in its content and Only the Ring Finger Knows is more of a soft boy-love romance, both are worth reading for fans of the genre.
If you like shounen-ai stories set in a school environment, then you'll likely enjoy both of these. Though Passion is a more fleshed out story and has more development int eh relationship, both are worth a look.