To Klaus, what happened between him and the Heaven's Executioner was his sparing her life.
However, he had just found out that things didn't end like he had believed back then.
It turned out that the battle he thought had been witnessed by his undead and Paragon guards was actually witnessed by one more person.
At this very moment, Klaus was staring at the back of a woman whom, even without seeing her face, he could tell who she was.
His body was frozen in place, and all he could do was look at his mom's back, who was having a conversation with the beaten and bruised Heaven's Executioner.
This scene played out for three good hours until suddenly, the lady turned and looked directly at Klaus, a small smile playing on her lips, before everything went black.
The next second, Klaus and Tifa appeared back on Earth, sitting behind the table holding the glass of blood.