No nudity nor sex. There's a girl with big breasts, she doesn't appear too often, but there's very little fanservice of her. In an episode, a character makes a comment about the size of her breasts. There's another character that frequently shows his bare, brawny, chest. This is depicted as fanservice.

Some violence. Intense sport action is present. There's blood, but no gore. In some scenes, the characters are seen getting hit by environment's items (from the racing track) or getting violent responses from other riders, like: Shoves, headbutts, punches, etc., causing injuries to the characters, from bruises to minor or major wounds.

Mild profanity level. The characters often curses, but not that much. Some characters call other riders by nickname and not with their names.

None.

As being in the Sports-Drama genre, the show itself is pretty intense. There are moments of comedy, action, despair, intimidation and plot-twist events. Some characters are fearful and wacky. The main character is a wimpy and introvert boy that often falls in hopelessness and nervousness. Despite that, he frequently gets back on his feet.