Durandal

Durandal is the two-handed sword Michio Kaga can create when he redistributes his bonus points to elevate himself to Lv6 in Weapons under the Bonus Equipment portion of the character modification screen (using a total of 63 of his total points; see Bonus Points).

Description
It's a ridiculously overpowered weapon, especially for a beginner, and one level above Fragarach. It is first seen in Web Novel Chapter 2. Durandal has the following skills:

Trivia

 * Michio is always worried someone will discover how powerful Durandal is.