If you're looking for manga similar to Build King (Pilot), you might like these titles.
In the village on Mount Oinari lives Naruto Uzumaki, a mischievous boy and son of infamous nine-tailed demon fox. With a reputation for pulling pranks, Naruto has no friends; that is until one day the chief sends him on a mission to the city – and he’s not to return until he finds a friend and brings him back to the village. When he arrives in the city, the young boy meets an artist named Kuroda and his assistant, Takashi, but just as he seems set to make his first friend, Takashi is murdered and Naruto is the prime suspect! Will Naruto be able to discover the true killer, finally earn the trust of another and make his first friend?
After being fired, high school student Shirono Akifumi happens upon "Rental Hoodlums," a service that might be the job he's best suited for.
Wisdom brings good fortune; but wisdom that is too advanced to humans bring destruction. Ox and Ivan, a pair of "wisemen", are on a journey to collect wisdoms that are in the wrong hands.