Because he and his companions just told the little boy the location of the Yurshika Church, they were on their way through the shortcut, still clearing the monsters along the way, so why bother with an invasion for no reason?
He was just playing with the Deep Blue Eye Orb on the road, because his hands were a bit itchy, so he kept switching between choosing to invade and canceling the invasion, enjoying that back-and-forth feeling.
As a result... it went wrong. The last time he chose to use it, he was teleported to Leon's world.
"Is there no other adventurer in Yilushier!"
Fingerley quickly jumped to the side, indicating he had no intention to fight them, having stumbled in here by mistake, so people stopped paying attention to him and focused on fighting the Undead.
"I've never seen this monster before?"
Fingerley looked around, realizing this was where the little boy's house was, but what was this monster that looked like both a Fire Execution Witch and a Pope Knight?