Goodnight3

Two anime-style characters stand in a cave entrance at night, with a full moon visible above. The character on the left, with spiky blonde hair and a yellow and red outfit, holds a large book open and raises his right hand in a dramatic pose, while the character on the right, with silver hair and a blue and gold outfit, stands beside him looking forward. The word "Goodnight" is written in cursive on the right side of the image.