The character speaking the line is , a close friend of the main character. In the scene, Tachibana visits Umaru's apartment and meets her older brother, Taihei. Taihei is a tall, serious, handsome salaryman who dotes on his sister.
Maji de. Dekainn. uchi no otouto maji de dekainn, Umaru-chan meme, Japanese internet slang, dekai meaning, otouto meme explanation. uchi no otouto maji de dekainn
So, next time you see a coffee mug that holds two gallons, a goldfish the size of a car, or a cat that blocks the entire TV screen, you will know exactly what to whisper. The character speaking the line is , a