For some reason, the glasses case Himuro gives Yukimura as a present is smashed to pieces. Shock sends Himuro racing away from the scene. Ibarada points out that it could have broken when Himuro fell on the stairs, but Yukimura estimates the force of impact based on the case's mass, materials, and height of fall, and concludes that someone must have deliberately destroyed it. Finally, at dawn, Yukimura finds Himuro crouched alone, barefooted, on a bridge. Will they be able to reconcile? And will they be able to prove their love...?!
Proof 12
I Knew I Could Fall in Love with You, 
So I Tried to Prove it.
الدليل الثاني عشر
الحبّ وقع العلم في
فحاولت إثباته
Beweis 12
Die Möglichkeit bestand
Liebe für dich zu empfinden,
folglich suchte ich den Beweis
Prueba 12
Sabía que podía enamorarme,
así que intenté probarlo
Prueba 12
Sabía que podía enamorarme,
así que intenté probarlo
J’AI TENTÉ DE PROUVER
QUE JE POUVAIS T’AIMER
Prova 12
Sapevo di potermi innamorare di te,
quindi ho cercato di provarlo.
Prova 12
Eu sabia que poderia me Apaixonar
por você, Então Tentei Provar.
Доказательство 12.
Моя любовь к тебе и 
её научное доказательство.