My Childhood Friend Is Yukino

(The main story is complete.) Who would have thought that after childhood sweethearts weathered so many years of waiting, their fingers would finally intertwine?

P.S. This book is a complete overhaul of My Childhood Friend Is Not My Childhood Friend's Childhood Friend. The Second Young Lady is the sole heroine. (You can just read it as a new book. Apart from the names, pretty much everything has changed.)

The introduction is a song lyric. Can you guess the song?

The completed work My Love Life, Tennis, and Miura Yumiko.