Three Beats Of A Heart

Ryan and Jennie have been best friends since childhood. Their families were on good terms as they have been business partners for long.
Ryan and Jennie were both in their high school year. A guy named Kin always had a problem with Ryan so he hated Kin with all his heart.
But slowly the rivalry between Ryan and Kin started to change into good feelings after certain interactions and frequent encounters.
Jennie being Ryan's best friend always helped him in everything and she was also there with him this time while he needed help to realize his feelings towards Kin.
But suddenly something very unexpected happens which tangles up all the relations and ties between the three.
Where will fate take their story to?