2.5 Dimensional Seduction Vol. 4 by Yu Hashimoto
'I have no interest in real girls!' So claims Okumura, the president of the school's manga club. He's your typical otaku, and his heart belongs to Liliel, a 2D manga character. Then the new school year starts, and a 3D girl whose passion is cosplay joins the club. Lilysa convinces Okumura to become her photographer--and guess who her favorite character is? The boundaries between 2D and 3D start to blur as this hot-blooded romantic comedy unfolds.