The title kinda says it all! This isn’t a show that beats around the bush. The low-mid-level goddess Listarte needs a human hero to save the S-Difficulty human world of Gaeabrande (or Gairbrunde) from the Demon Lord. Knowing how popular the isekai genre is in Japan, she only looks at candidates from that country, and is unimpressed with most of them…until she comes upon one Ryuuguuin Seiya, who is neither a Suzuki or a Yamada.
To oversimplify, let’s call this KonoSuba in reverse: rather than the guy from another world being the narrator and providing the primary POV, here it’s the goddess, who is just looking to get ahead in godlife. She knows she’s struck gold in Seiya, but while he’s super-hot, she almost immediately realizes there’s a catch to those good looks and gaudy stats: Seiya is redonkulously cautious.
For one, he trusts no one, including the goddess who summoned him. He doesn’t trust the onigiri she worked hard to make for him unless she tries it first, and even then, he suspects they might have a slow-acting poison. He spends over a week in the dwelling Lista prepared for him, leveling up simply by working out.
Lista takes Seiya to a beginner’s town for outfitting, but he spends most if not all of the money she gives him on three sets of armor for double redundancy, as well as far more potions and antidotes than are needed…again, because he’s so cautious.
Once they’re finally out in the field, with nothing but harmless Level 1 slimes, he executes both of his special attacks over a half-dozen times even though the first attack was more than enough to obliterate the slime. All the ruckus he causes ends up attracting one of the Four Heavenly Kings who serve the Demon Lord himself; rather than face her, Seiya cuts and runs, leaving Lista to chase after him.
Seiya isn’t much more than the manifestation of the show’s title, but thankfully, he doesn’t really have to be much more than that. Listarte provides more than enough character for the both of them, thanks in no small part to veteran seiyu Toyosaki Aki putting on a veritable voice-acting clinic. She has as many voices as he has contingencies.
Add in the dynamic of an overpowered hero so dang cautious he’s his own greatest liability, and you have an isekai comedy that actually has something new to say. I’m in!