The Truth Of The Santos Demon

The dozen other Rose Knights sympathized with Fatty's sudden burst of anger. 

This Danny kid was really bold. His observations were sharp but did he not notice? If everyone or anything could fuse with the Demon Seed, the Fallen Star Church would be filled with powerful monsters.

If everyone could have the same fusion effect, why would the black-robed clergies, the white-robed apologist, and the red-robed bishop's levels of power differ so much?

If human beings had to go through these many difficulties to produce a powerful fusion monster, let alone the horses, it was obviously unreasonable for the Demon Seeds to simply fuse with whatever living being they could infect.

Fatty's rage was understandable. Tang Ling really was a madman. Whenever a theory came up in his mind, he ought to verify it whatever the cost was.

Therefore, the second reason he told Fatty to find the horses was just to verify his theory.