is a shōnen

Shonen

The term refers to manga marketed to a male audience aged roughly 10 and up. The Kanji characters literally mean "few" and "year", respectively, where the characters generally mean "comic"...

 manga

Manga

Manga is the Japanese word for "comics" and consists of comics and print cartoons . In the West, the term "manga" has been appropriated to refer specifically to comics created in Japan, or by Japanese authors, in the Japanese language and conforming to the style developed in Japan in the late 19th...

 written and illustrated by Ito "Oh Great" Ōgure

Oh! great

Oh! great, whose real name is , is a Japanese manga artist most recognized for the manga series Tenjho Tenge and Air Gear. In 2006, he received the Kodansha Manga Award for shōnen for Air Gear. Oh! great also created the adult series Silky Whip...

. Air Gear revolves around the life of Itsuki Minami "Ikki", also known as "Baby Face", "Lil (and Little) Crow", and his friends. The story follows their use of Air Treks, an in-universe invention derived from inline skates. Initial sections of the plot carries out the introduction of characters that eventually join Ikki. As the story progresses, it focuses on their roles as Storm Riders and their quest to be on the top of the Trophaeum

Tropaion

A tropaion , whence English "trophy" is an ancient Greek and later Roman monument set up to commemorate a victory over one's foes. Typically this takes the shape of a tree, sometimes with a pair of arm-like branches upon which is hung the armour of a defeated and dead foe...

 Tower.