Kami-sama ga Uso wo Tsuku

Kami-sama ga Uso wo Tsuku manga summary: It's the summer when Natsuru is 11. Ever since he's turned one of them down on Valentine's Day, the girls of his class have been constantly ignoring him. This changes just before summer break, when Suzumura, the tallest girl in the year, suddenly talks to him. Later, Natsuru meets Suzumura again outside school and finds out she has a secret.