Kanojo no Karada ni Tsuita Aitsu no Kiss Ato ~Osananajimi no Kyonyuu Kanojo wa Senpai no Ookina Ude ni Tsutsumare Toroketa Emi o Ukaberu~

Your name is Seiichiro and you have come back to your town after 5 years. You meet your childhood friend Haruna who turns into a fine lady. You have feelings for Haruna but cannot become close to her like the old days because your mother cheated on your dad which made you distant with the opposite sex but little by little you open your heart to Haruna...

[From J-List]