Shogakukan will ship the eighth compiled book volume on May 24.
Ichijinsha published the fourth compiled book volume on December 27.
Title: Magical Buffs: The Support Caster is Stronger Than He Realized! Wim Strauss is a “granting caster”—a support mage who can increase the strength of his allies through the power of his spells.
The morning after Kippei accidentally breaks a sentimental mug, he swaps places with his younger self from ten years ago!