Time and Universe (時間と宇宙, Jikan to uchū) is the 21st chapter of Clockwork Planet manga series.
RyuZU and AnchoR begin to fight, the former in dual-time while the latter catches up by brute force and still further accelerating. Anchor is proving to be a match for her, while she strategizes that she needs more speed. During this fight, RyuZU thinks back on the plan she made with Naoto three days ago. He proposes that she uses him as a shield to halt AnchoR and destroy her mask. Naoto is completely confident that AnchoR won't kill him because she cannot kill humans. The fight turns to a head when RyuZU loses one of her scythes and attempts to try Naoto's plan.