Tokage (Hontou wa Shinryuu) wo Shoukan Shita Seijuu Tsukai, Ryuu no Senaka de Kaitaku Life

Levin, a young man who was supposed to summon a sacred beast in a grand ritual, ended up calling forth a tiny lizard instead. Furious, the king exiled him from the kingdom. Guided by the lizard, Levin soon encounters a colossal dragon that carries an entire continent on its back!? As it turns out, this little lizard is actually a pure white Divine Dragon, and the vast continent on its back is her homeland. At the dragon's request, Levin takes on the task of developing the desolate Dragon Contine...