From Shoujo Addiction:

High-school student, Oikawa Miwa, has her first boyfriend! He is an older guy that works at an appliance store, but does he really love her or is she too young for him to take seriously?

This volume also contains the following short stories:

Naymeru Hime to Mayoeru Ouji
Love Chain
Zenbu Aishite
Heisei Hakuba no Oujisama
Sports Party
Trouble Summer
Smile Road