Lesson 1 is the debut studio album of the Japanese super girl group E-girls.

[2][3] On March 18, jacket covers and track list were revealed, the CD including fourteen tracks and DVD including all music videos released up to date and a bonus live video from EXILE's "EXILE Live Tour 2011 Tower of Wish ~Negai no Tou~".

First presses of both editions feature a special packaging and include a card with a serial code which give access to a free wallpaper download though their official website.

If codes of the album and their previous release, "Candy Smile", are entered, the page also offers the download for an unreleased song.

It includes three new tracks: "Loving Bell", "Shiny Girls" and "Take it Easy!

Due to the addiction of the non-debuted group Bunny and another member from EGD, the number of members increased to 32, which made LDH lead to a new system for the release of the single where the girls were required to undergo a period of training and afterwards, the girls who excelled and fit the image of the single would be chosen to participate.

Sixteen members, four vocalists and twelve performers, from all five groups included on E-Girls were chosen for this single.

A special version of the b-side, "Love Letter", was included on the album.