This is a set of 5 Pentel Ain mechanical pencil lead refills (H). It comes with a sticker of Ken Shimura's "Bakadono-sama" character. It's a collaboration between Sharp Lead (Ain) and "A-in" (a pun on the character's signature pose).(^^) Brand new, unused. The Bakadono sticker is supposed to change color with temperature, but as it's an old item, there's no guarantee the color change will work due to aging. We appreciate your understanding.