In Serenity - Ch1, the main character's mom learned the devastating news that she had cancer when her son was just 15 years old. She fought hard, but cancer got the best of her five years later. It wasn't long after his mother died that he learned that she wrote a book for him. Inside the book, his mom tells her son a side of her that he never knew existed. She will unlock secrets from their past that now make sense. He will have to learn how to live life without his mom and make sure that his harem doesn't stray too far away from him.