Shogakukan is holding a nationwide bookstore campaign to celebrate the release of the 8th volume of "Utsuranaindesu" by Konoshima Ruka on May 18, 2026. This popular occult youth series, serialized in Weekly Shonen Sunday, follows a boy who attracts spirits and a girl with an anti-spirit constitution. During the campaign, customers who purchase the manga at participating bookstores will receive one of three exclusive "Puri Puri Chi" stickers featuring unique character illustrations. The stickers are available in limited quantities on a first-come, first-served basis at a price of 594 yen per volume.