Koi wo Shita no wa

"Koi wo Shita no wa" (恋をしたのは) is a song by Japanese singer-songwriter aiko. Released on September 21, 2016 as her 36th single, it is the ED 1 for the animated film Koe no Katachi (A Silent Voice, 聲の形), a 2016 Kyoto Animation production.

Aiko wrote and composed the song, which Pony Canyon released as the single "Koi wo Shita no wa" and on the digital release Koi wo Shita nowa - EP. It reached number 2 on Japan's Oricon Singles Chart and number 2 on the Billboard Japan Hot 100.