"Lonely" (ロンリー, Ronrī) is Japanese singer-songwriter Mao Abe's fourth physical single, released on June 9, 2010.

[2] The song was used in a commercial for Calpis Water, starring Umika Kawashima and Hannya member Satoshi Kaneda.

[5] It switches between two views of Abe: one where she stands in front of a light brown background as staff members fuss over her appearance.

After the marching band performance, the scene changes to that of Abe sitting on a chair playing her acoustic guitar.

The music video consists of only three shots: from the start until Abe is fussed over a second time, a short clip filmed from a hand-held camera during this, and from this point until the finale.