It was spring, when the coldness begins to subside.
The protagonist Higuchi Yuumi's parents get transferred overseas due to work. For the sake of her studies and her future, they decide that it's best for Yumi to stay in Japan alone. With her best interests in mind, her parents arrange for Yumi to attend Saint Claus Academy. Apparently, they decided on Saint Claus due to its high number of students from respectable families, its firm administrative policies and how it also has a joint university.
Yumi struggles to get used to being in a new town, living on her own and her new school life. Though she's apprehensive about the many things she has to do for the first time, Yumi makes good friends and is able to enjoy life with a positive outlook.
She meets various boys. Feelings of love begin to faintly grow in her heart. As she grows closer to them, she starts to see the various problems the boys were dealing with. Seeing their struggles inspires Yumi to seriously think about her own future, rather than aimlessly living day-by-day.
As Yumi gradually matures through overcoming the hurdles of friendship and love, what awaits her in the end...?