6 decades books

A 25-year-old named Ri''''n Makato has his same routine, just goes to his part-time job and college classes. With his regretful past, he wasn''''t able to have any good memorable memories from grade school all the way to high school. Growing up, he didn''''t really have no friends at all due to how his personality was. Now being an adult, he struggles wondering if the life he lives now was meant to be. Little did he know his life was about to change when he meets a mysterious girl named Liena.