In August, the group announced it would return to Japan with its fifth single, "Heaven," to be released in October.

The photobook edition includes photos of After School by the Harajuku-based photographer Yonehara Yasumasa, who also produced the album arts.

The music video opens with members' pole dancing, a skill they learned for their Korean promotions of First Love.

The video transitions into clips of After School, suggesting the man is reminding himself of preceding events.

After it shows the choreography once again, the video proceeds into rapid scene changes, which ends with the man falling on the floor in the room, whose lights are turned out.