"Uh..."
Fang Zheng looked awkward as Frostmourne stood before him, silently staring at him.
Honestly, Fang Zheng's relationship with Frostmourne was rather complicated.
Strictly speaking, Frostmourne had been the first being Fang Zheng encountered after crossing over. Back then, he had just arrived and was being hunted by Holy Knights. Fang Zheng had directly activated Arthas's Soul Stone, killing the Paladins pursuing him, then opened the Dimensional Codex's travel system and escaped into the Dark World. Frostmourne had followed him in at the time.
However, Frostmourne had not technically belonged to Fang Zheng then. It was more like a quest item. Of course, if that had been all, there would not have been much of a problem between them. Unfortunately, trouble arose afterward.
That had been Fang Zheng's first level-up. He had needed to choose between upgrading Crusader Strike and Frost Strike. Considering that he was being hunted in the Main World, Fang Zheng naturally could not choose to become a Death Knight, so he decisively picked Crusader Strike. Then there he was, wielding Frostmourne and using Holy Light to hack monsters apart in the Dark World... Frostmourne had been extremely, extremely unhappy about that.
Fang Zheng had sensed it too, but there was nothing he could do. He could not seriously switch classes and become a BOSS, could he?
As a result, after the quest ended, Frostmourne upgraded Fang Zheng's Crusader Strike from C to A, then disappeared outright. If Fang Zheng had chosen Frost Strike and become a Death Knight back then, perhaps she would have stayed.
It could be said that during their first meeting, Frostmourne had been quite dissatisfied with Fang Zheng.
And when Fang Zheng truly drew Frostmourne, he already had two Sword Spirits, Lestia and Esther. Although those two Sword Spirits were quite indifferent