Kubo Won't Let Me Be Invisible, Vol. 6 by Nene Yukimori

A social butterfly makes friends with a wallflower-whether he's ready or not!Junta Shiraishi blends into the background so much that even his classmates fail to spot him. His goal is to make the most of his high school years, but that pesky invisibility gets in the way...until Nagisa Kubo notices him! Kubo's playful teasing kicks Shiraishi out of his comfort zone and begins a friendship-or maybe something more?Sports day has arrived! Shiraishi, Kubo, Tama, Hazuki, and Sudo team up to compete in the six-legged race. Can Kubo help Shiraishi earn his first group-event victory? As challenging as sports day is for Shiraishi, it might not be as intimidating as having a girl in his room...
Binding: Paperback / softback