In 2017, Ohtani posted a video snippet on her official instagram of her computer screen where you could her her vocals. She sang a cover of Mika Nakashima's "Yuki no Hana". It said "Masae Otani demo Yuki no Hana 160505 TD" and "You Are My Everything 160505 TD".
In 2016, a song called REALIZE was mentioned on a fan blog as it was sung live at one of her live events. The same fan blog also refers to a song called リアルアイズ (RIARUAIZU), which can be a different way to write "realize".