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.
The episode hilariously explains why Takafumi’s memories of young Fujimiya were "ugly"—apparently, a specific "ugly phase" runs in her family during childhood, though Chiaki is predicted to "hit the jackpot" after puberty. Isekai Ojisan Episode 7
Watch the hilarious segment where Ojisan's expectations of a Sonic-like adventure are subverted by a terrifying monster: Instead of a friendly blue mascot, he encounters