"We Are "Lonely Girl"" was the second single release from Hitomi. Using the popular synthpop style in the Japanese music industry at the time, and featuring composition by Tetsuya Komuro and production by Cozy Kubo, this single managed to chart on the Oricon, becoming her first charting single and first single to chart in the Oricon Top 100. Hitomi also wrote this song, which uses deeply personal lyrical content. To further promote the song, Avex Trax agreed to let it become the commercialtie-in song for NTT DoCoMo "Berumi" commercials.
The promotional video showcases a black-and-whitecontrasting technique, highlighting Hitomi's features. Because of this, the video has a noticeably more serious tone than Hitomi's last video. Hitomi is shown doing various activities, such as getting dressed, putting on make-up, relaxing in her room, and reminiscing. Hitomi is also shown wearing various outfits, including lingerie. Like the music video for "Let's Play Winter", there are many close-up shots of Hitomi's face.