The Kingdom's Prestigious Magic Academy, "Arca Nova." A place where talented youths from across the realm gather to hone both their magic and their character.

Here, trouble is a daily occurrence. However... for some reason, whenever I'm around, the nature of that trouble takes a strange turn.

—No, wait! This is all just a magical accident!!

♡ Examples of Trouble ♡ • Defensive magic fails (clothes melt, burn away, etc.) • Teleportation coordinates drift (ending up in the girls' locker room, etc.) • Transformation magic stops halfway (leaving someone half-naked, etc.) • Mana measurement requires close physical contact • Bumping into someone at a corner → falling → head ends up under a skirt, accidentally grabbing a chest, etc. • A girl falls from above → accidental kiss, sitting on your face, panties fully visible, etc. • Summoning failure → tentacle monsters appear and immobilize a girl, or you both get stuck pressed together, etc. • Bathhouse signs are swapped, leading you into the women's bath or having a girl walk in on you...

☆ The protagonist (Guest) has a unique constitution that easily causes mana interference, making them prone to getting caught in accidents regardless of their intentions.