Mahiro Todaka (who has the kanji for "rabbit" in his name as well.) wanted to be a pro gamer when he graduated, but after a firefighter Iwao Miyachi loses his life saving him. Mahiro is aided by the ghost of Tendo and joins the Fire Rabbit squad to become a fire fighter who will someday surpass Miyachi.
Mahiro is more interested in programming and games than, well, anything else really. To the point that he totally misses that they're doing evacuation exercises and has to be personally invited to join the group outside. He has amazing grades and a straightforward personality --perhaps to a fault since he can't recognize things and people around him due to being too engrossed in his ambitions to be a programmer.
Mahiro really isn't malicious, he's just really (seemingly) unable to read the room, and even though he and his uncle have the same interactions in regards to saying his real name in public (he shouldn't) and blames himself for baking trouble for someone who's raised him, it's more a thing where he's just really unsure how to act than acting a certain way on purpose.