Uso Kara Deta Makoto

Overview

When Kensuke Niikura transferred to a new school in the third grade, he lied about having a girlfriend named Makoto when he introduced himself to his new classmates. For the next four years, even after he entered junior high, Kensuke continued to make up stories about his “imaginary girlfriend." One morning in the second year of junior high, a real girl "Makoto" appears in front of Kensuke…? This is fantastical story about a lying boy caught between reality and deception! (Source: Shonengahosha, translated)

Source: AniList