となりのオトナくん•Tonari no Otona-kun

My Darling Next Door

Ririka is a high school girl who lives alone with her father. Despite not having a boyfriend, she always has a blast at school and at home everyday while leading a fulfilling life. Yet one day, she finds an extremely attractive older guy at the apartment’s garbage collection site. It turns out that he’s the salary man that just moved in next door. (Source: Kodansha, translated)