"University is a place to study for the future, right?" Freshman welcome parties, guy gatherings, and various incidents... The first year of university for the female student Ai passed by in the blink of an eye. As she spends her second year of university without any changes, she reunites with her senior Chi, who is one year ahead. Gradually drawn to Chi's elusive and mysterious charm that she felt since their first meeting at the entrance ceremony, Ai finds herself captivated. This book is a compilation of the doujin works [philosophia] published by the author over two years.