Chishiyoubun no Ai wa KometeChishiryouban no Ai wo Komete ; 致死量分の愛を込めて ; Infused with a Lethal Dose of Love

Uchida's never ever been in love. He doesn't know what it's like to be restless and uneasy, to have his body heat up like it's on fire, to feel that tight pain in his chest. And then he meets Takahashi, and everything changes.