Intricate illustrations of animals, humans, machines, architecture and nature all coexisting together in a fantastical way by Kyoto-based artist Kazuki Okuda. His approach to these drawings involves using a pen to do the detailed line work then using Photoshop to add color. The finished work is then printed out. Okuda's illustrations are layered with symbolism that addresses issues such as environmental problems to futuristic concepts.
See more of Kazuki Okuda's work on Behance or at his website.