John Titor no Koiuranai

John Titor was the supposed time traveler who made headlines in 2000 with his various predictions about the future. A fortune-telling program he allegedly coded has become wildly popular. Despite finding it all rather sketchy, Raraka Akio, a girl harboring an unrequited crush on Tsubasa Amanogawa, decides to give the fortune-telling machine a go. But when the name of her destined partner appears...!?

(Source: Shueisha, translated)