U-verbs (五段) include not only those ending with a う, す, く, ぬ etc but also a handful that end with a る in much the same manner. They're common exceptions to the ～る => ru-verb "rule", and a bit of a pain to learn -- unless of course you can divine the magical way Japanese native speakers seem to just intrinsically "know" what category a previously unencountered verb falls into...
U-verbs (五段) include not only
U-verbs (五段) include not only those ending with a う, す, く, ぬ etc but also a handful that end with a る in much the same manner. They're common exceptions to the ～る => ru-verb "rule", and a bit of a pain to learn -- unless of course you can divine the magical way Japanese native speakers seem to just intrinsically "know" what category a previously unencountered verb falls into...