Am I Actually The Strongest L Novel Vol 05

After many failed attempts at trying to get expelled from the royal magic academy, Haruto finally achieved his dream of becoming a shut-in... at school. Not exactly according to plan but it's still a win! Sleeping in, watching anime, napping-life is great! But his days of freedom are quickly interrupted by a mysterious transfer student, followed by the Devil Lord revived, more assassins, a magic tournament... When does it end?