Koi ni Ochiru Toki (恋に落ちるとき^?, "When You Fall in Love") is the Japanese debut studio album of the South Korean boy band Infinite. It was released in June 5, 2013 in two different editions. The album is the first audio-related release of the group under Universal Music Japan's sublabel Universal D.

The album's release was announced by the group's Korean label, Woollim Entertainment, on March 29, 2013. With the announcement, they announced the release day, prices and details about the editions. In April 10, a promo photo of the album was released. In April 24, the cover of the regular edition, track list and album's title were revealed, titled Koi ni Ochiru Toki.

The album is composed of twelve tracks. All tracks are Japanese versions of songs previously recorded in Korean. The songs "Welcome to Our Dream" and "Man in Love" were released on the fourth Korean mini-album New Challenge. "To-Ra-Wa", a Japanese version of the song "Dasi Dorawa", "She's Back" and "Wings" were released on the group's Korean debut mini-album First Invasion. "BTD (Before the Dawn)" was released on the second Korean mini-album Evolution. "Be Mine", "Tic Toc", "Timeless", "Crying", "Because" and "Julia" were released on their first Korean studio album Over the Top. The Japanese version of "Crying", a song of the group's sub-unit Infinite H, feature the Japanese television personality and singer Becky♪♯.

Three songs from the album were released as singles:

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