This papercraft is a Chibi Aichi Sendou, who is the main protagonist of the Japanese media franchise Cardfight!! Vanguard, the paper model is created by Kataho. There is also a Chibi Emi Sendou Papercraft at papercraftsquare.
For the duration of season 4, Aichi was sealed by his own volition to keep Link Joker sealed away with him, while leaving his friends in the dark. Consequently, Kai set out to find Aichi and becomes the main protagonist during this period.
He is a somewhat shy and timid young man who wishes to be a Vanguard Fighter, but has never had the chance to have a real fight until his second encounter with Kai. When starting to play Vanguard, he believes more in himself, becoming a powerful Vanguard Fighter. His Vanguard Circle's color is blue; but when using a Shadow Paladin deck, the color changes to dark blue.
Aichi is a boy with long blue hair with a right hair bang which is his signature style. He is first seen in his Hitsue Middle School uniform which is mostly all gray with white linings along with a red sweater under it. His civillian clothes varies with the change in season particularly wearing a short green jacket with a red sweater under it for cold seasons while sporting a white double sleeved shirt for warm seasons. He is quite particularly short compared to other characters of the same grade.
By the start of the second season, he still wears his middle school uniform but he is mostly seen in his civillian clothes by the time of the VF Circuit which is a white jacket with a red sweater beneath it.
In the start of the third season, he is now a highschool student at Miyaji Academy wearing the basic male uniform which is a black blazer with red linings along with a white formal shirt underneath it and a red necktie. By this time, he has short hair but still maintaining his signature right hair bang and has significantly grown taller. His civillian clothing shown so far is a varying colored jacket of dark purple and white while having a light purple sweater underneath.
In the fourth season, not much is seen. The only thing seen is a general coat schemed with red & black. After finally appearing he is shown to have shorter hair, dull eyes and he may have possibly grown slightly taller. He also has a cold and cruel look on his face due to Link Joker's effects, and the signature black and red aura. He was also shown to become physically stronger despite his looks, when he saves Kourin from the Link Joker miasma and carrying her to the throne. [Source: wikia]
You can download this papercraft template here: Cardfight!! Vanguard - Chibi Aichi Sendou Free Papercraft Download