Renji broke up with his mother when he was young, and the days he spent with his kind and beautiful mother were healing.One day I received a letter from his mother. When I met him again after 1 years, my son's patience was broken... I hugged his mother. "I'm sorry. If Renji will forgive me, I'll do anything for my mother..." These words turn Renji's love for his mother into a dark desire... His mother and son fell into pleasure while gasping for joy on a hot spring trip to meet again for the first time in 20 years...