That's a great pitch. I feel like you could mine a lot of comedy just by leaning hard into the protagonist's flat-out refusal to feel guilt or have any sort of redemption arc.
Unworldly horror: I am the collective symbol of those who loved you! Those who DIED BY YOUR VERY HAND!
"What's that, Yakuza 0? You'd like me to complete a mission by achieving 100,000 points in a retro game down at the arcade? No sweat, what game is--ffffffffuuuuuuuuuuuu..."
Image #2 has got some strong Blaxploitation Tuxedo Mask vibes mixed in for extra fun.