Haganai: I Don't Have Many Friends Vol. 7 (manga)

Recent high school transfer student Hasegawa Kodaka is pathetically inept at making friends. He is an outcast, with his blonde hair and his unpleasant, fierce gaze. When he comes across the brash loner Mikazuki Yozora, who chats with her imaginary friend, the two outsiders become the unlikeliest of allies.