Back in the real world, Takafumi is alarmed to see a "creeper" hitting on Fujimiya at the park. It is revealed to be Chiaki , Fujimiya's younger brother, who is only in the fourth grade.
Instead of a friendly blue mascot, he encounters a giant, violent hedgehog that tortures humans. Ojisan assists Alicia and her party (Raiga and Edgar) in defeating it, further cementing Alicia’s status as the official "Hero" of the land. Isekai Ojisan Episode 7
Watch the hilarious segment where Ojisan's expectations of a Sonic-like adventure are subverted by a terrifying monster: Back in the real world, Takafumi is alarmed