Tatsuhiro Satou

Tatsuhiro Satou is the main protagonist from the Welcome to the NHK anime and light novels.

Tatsuhiro is a 22 year old, socially withdrawn, parasitic, hikikomori. He lives off of the allowance that his parents give him and from the food Misaki cooks for him. At the start, he is depicted as a hopeless human being destined to rot in his apartment room. Until one day, he came across a mysterious young girl who will eventually save him from his Hikikomori state. He was born in Hokkaido. The last place he attended school was Heisei Bunka University, a private school, but he dropped out.

Appearance
Satou is a somewhat tall and often times shady looking man. He is sometimes seen with stubble and messy hair, has deep eyes, and huge eye bags. He normally wears a jacket, cap, and glasses whenever he goes out, giving him the typical otaku/stalker look.

He is sometimes depicted as a thin, malnourished individual, but this was only when he faces times of absolute need for food.

He is often seen smoking a Marlboro cigarette.

Personality
Satou is a rather indecisive and lazy person. He knows he is a hikikomori and knows how he can get out of it, but decides that it is too much of an effort to actually do anything about it. He changes his mind very often, as shown when he constantly changes his mind about how to proceed with Misaki. He can also lose hope fast, made apparent during the production of his and Yamazaki's gal game where he is determined to start but quickly loses that determination mid way, saying that the game has no chance of getting finished anyway and that he has other things to do. He is also a simpleton and gets dragged into various situations against his will, like when he absentmindedly gets involved in a group suicide and when he gets convinced into a pyramid marketing scheme.

Trivia

 * He is voiced by Yutaka Koizumi in the Japanese version of the anime and Chris Patton in the English version.
 * He is a paranoid pervert.