Nobody expects this five-minute flash anime to nail the exact texture of being a useless adult stuck in your parents' house, but it does. Isobe isn't a sympathetic loser with a redemption arc waiting, he's just genuinely terrible at life, and the show commits to that with the kind of cold comedy that only works when you recognize yourself in it. The ukiyoe aesthetic gives it permission to be crude and honest about desire, laziness, and the gap between who you are and who you pretend to be at dinner. It's not trying to make you root for him. It's trying to make you uncomfortable about how much he reminds you of someone.
Isobe Isobee is a lazy samurai who spends his days lounging around the house he shares with his mother, who holds a high opinion of him. School is mostly a place to nap. When she isn't looking, he sneaks peeks at Edo-period erotica. Despite all this idleness, he still dreams of one day becoming a respectable samurai. The comedy, animated in an ukiyoe-inspired flash style, comes from the gap between his lofty ambitions and his slacker habits.