Zhang Heng never thought that the first item he would get would be a wakizashi.
He hadn't even started on the main mission yet but had already completed one side mission and even obtained a piece of novice equipment.
In all fairness, the knife was of relatively good quality. Even though it was no acclaimed sword, it was finely-made, much better than the one he had, which looked like a fake blade. Of course, when compared to a renowned sword like the Mikazuki-Munechika, the wakizashi was, to some extent, a little inferior.
Moreover, short swords like this one were more suitable for hand-to-hand combat. When the enemy was plenty, short blades weren't as ideal as an uchigatana or a tachi. Zhang Heng wasn't too concerned about one-on-one combat. He was looking to obtain a proper sword in case he found himself in a one-to-many situation.
But since a sword had been presented to him, he decided to accept it anyway.