Koi wa Ronpa Dekinai

He has zero friends and is terrible at socializing. Utsushibito, who relies on the internet for emotional support, falls in love with Nodoka, a girl who, for some reason, cannot communicate at all via the internet. The only way to connect is through a "black telephone" (rotary phone)..? How on earth can he become close to her when the wall standing in his way is so high!?