Congratulations

"... that is only possible now."

"I understand, Klaus, but this case is different." Samael shook his head, fully aware of where was Klaus was coming from. 

The La Crox siblings were used to showing their affection for each other through violence. They see each other competitively. Their bonding was to infuriate each other, but not to the point they wanted to kill each other.

A love and hate relationship.

That sort of relationship lasted for a long time until the present time, where only hate remains. 

"I always know Alphonse is someone dangerous," Samael explained while knocking his knuckles against the surface of the table lightly. "Dyrroth also feels the same. That why he... he made a way to banish Alphonse in the past."