Sakura Saku Vol. 1

<b>The bud of bittersweet first love takes bloom!</b> <p/>A mysterious boy comes to Saku Fujigaya's rescue when she falls ill on a train but he leaves before she can thank him. After this experience Saku never ignores strangers in need of help to emulate the boy who helped her. <p/>Saku Fujigaya would like to thank the boy who helped her but all she has is a note signed Ryosuke Sakura. She discovers that a boy at her high school Haruki Sakura has an older brother named Ryosuke. She asks Haruki to deliver her thank-you letter to Ryosuke but why does he refuse?