While planning, Brunos had not took into consideration the fact that he might meet someone like Lania. But that's how life and reality are. Full of surprises. However, there is one thing he was sure of. That his plan would not go as smooth as he wanted.
'What should I do?'
If he had let the Petite go with Morrin's team, he would have used his super speed ability to outrun whatever he would meet, reach his room, enter the dimensional tunnel and disappear.
It's not that he took the Petite with him without thinking about it. Only with her, his mission to kill a Pergus Creature would go smooth. Maybe one day... no! Not maybe. He was sure that in future he would be strong enough to kill dozens of them on his own. But now he needed someone with a strong pet like the Petite's serpent to accomplish the mission. That's why he didn't want to separate with her.
'Fuck the system! Why do I even need to kill monsters if all I need is lust. Let's see, is it because I have to be strong?'