@bashem he is known as a "problem solver", not a genius. From how he act and how he push all the thinking to his brother in arm, pretty sure his strategy have always been "If the problem can't be solve with force, you just didn't hit it hard enough".
@sheepizh the build up make it feel a bit too obvious if it was a stalker, i'm guessing someone that know the sempai real side, i mean, this probably not the first time he did this.
most/all religious text are long and easily interpretive/manipulate into any argument, heck, most data can do the same depend on the speaker. The guy prob pull some sort of 'can't turn your back to evil' or maybe 'duty/pride of the role'
Random thought, what would happen if they found the girl's parents? Unlikely, but just a thought after looking at the target for this mission(holding briefcase) hair color and hers. The target this time is 99% not the parent, but who to say any one the other targets are not?
wait, wait, wait, doesn't she sleep on a bunk bed with her sister? you telling me the cousin sleepwalk out of the room, arrive in that room, not atk the sister, but climb up and atk her?