Jaken-san wa Sugu Bureru

Have you ever seen a sword with eyes and teeth and… tentacles?
A fantasy world filled with magic, and inhabited by fantastic races, just like any other... Or so it used to be. The dawning of the technological era has brought forth computers, phones, tablets, and even the Internet. Fantasia has become ever changed... That is, until a pair of siblings stumbled upon and mysterious sword...
(Source: Comikey)