"I'm Sure It's Hot (Remain)") is the tenth single by Japanese idol duo Wink.

Written by Neko Oikawa and Anri Sekine, the single was released on March 20, 1991, by Polystar Records.

[1] According to lyricist Neko Oikawa, she got the idea of the title "Kitto Atsui Kuchibiru (Remain)" from a manga she saw somewhere.

"Kitto Atsui Kuchibiru (Remain)" became Wink's third consecutive single to peak at No.

[3] All lyrics are written by Neko Oikawa; all music is arranged by Satoshi Kadokura.