https://www.youtube.com/watch?v=C5zil_XOCXA

Rain and Solar were best friends, always together; but that all chnaged one day when Solar unintentionally lets Rain's secret out and the guards catch wind of it. They arrest Rain and he is sentenced to prison for 15 years, during that time he cries for his friend to come and visit, but solar neither writes or visits him and Rain falls into a state of depression. Rain's will is broken, he serves his sentence and is released. The reason for Solar not visiting him was because he promised to keep Rain's secret, but the pain of having broke it made him question if he could even face his friend in prison, but it comes on the release date when he finally gathers the courage to apologize to rain.

Solar arrives as Rain comes out from prison and tries to apologize, but Rain is upset and ends their friendship on the spot and begins his life anew.