Haruka Itoshiki Invader

Saeki Sousuke is an exceptionally smart student who, despite being only in 5th grade, can solve university entrance exam questions. However, he lacks any real ambition or dreams for his future. One day, Mogami Kyouko, a stunning girl who looks like a model, transfers to his class. Though she initially captivates everyone, her popularity among classmates doesn't last long...