Boku no Imouto wa "Osaka Okan"

I got a similar feeling from these short funny episodes. You don't have to think about anything while you watch them, like when you're feeling tired but still want to watch some anime. :D 

Both are short flash-based animations with the purpose to educate viewers about certain customs and culture. 

Both series consist of a few minutes of random slice-of-life hilarity. Easy watching. 

Both are fun, light-hearted comedies that focus on certain cultures. "Hetalia Axis Powers" deals more with countries and the stereotypes that surround them, while "Boku no Imouto wa" focuses more on Osaka and the mannerisms of the people there. They're also both only a few minutes long.  

main girl in both bathing at the last of every episode and somehow both are voiced by Asumi Kana 

Each of the series are simple short running shows about learning about people from different places. Both of them include little silly trivia slides about the characters such as examples "She likes to make noises while on the toilet" or "They can't watch TV without talking back to it." Also Suzaki Aya's and Ishihara Namika's characters remind me of each other with their silly mannerisms.  

In both anime a guy from Tokyo moves to another city (Nagoya and Osaka) and experiences the differences between the cities. Both are short anime so don't take much of your time. Yatogame-chan has MUCH better art so is more recommended. 

Both shows are flash animation and short series. They are both light hearted 'comedies'. JK Meshi is focused on food and Boku no Imouto Osaka is more-so comedy based with slice of life aspects. 

Similar funny shorties with girls and randomness. 

Both are short anime explaining regional differences, but Gunma is much funnier than Osaka Okan. 

Similarities: Both involves brother and sister who were separated and reunited with one another. Both sister and brother live together. Both involves a brother who cares for his sister. Both share the same comedy genre. Dissimilarities: One is a full length anime while the other is a 5 min omake. One has brocon while the other is strictly in a brother and sister relationship. 

- Really similar - Both are 3 minutes per episode - Sister suddenly starts living with her brother