Jinwoo is so addicted to putting points in strength and just likes daggers so much he's not picking up better weapons like the System wants him to do to get stronger.
So, instead, the system has to bend over backwards to make daggers where there normally would not be daggers so Jinwoo will actually use drops and not get himself killed
Jinwoo: *kills a foot soldier monster*
System, internally: (...well that one had a spear, I guess I can work with that and turn the tip into something like a dagger, sure. Let's go with that.)
System: (Let's see... That one was a caster... Did it have a dagger for emergencies? No? Hmm... Oh, I know, it's got big horns. Those are daggers now.)
Jinwoo: Oh, sick, a demon horn dagger... Look at the stats on this...
Jinwoo: *kills a gelatinous cube*
System: (Ok first of all, how. Second of all, no teeth or horns. Shit. What do I do. Uhhhhhhh)
System: *frantically googling for that YouTube guy that makes knives from jello*
Jinwoo: *kills a giant orc*
System: (Ok whatever let's use the longsword it was using and just CALL it a dagger)
Jinwoo: Woah, this is a HUGE dagger. Sweet. Description says... Strength stat large enough to weld one-handed? Perfect.
System: (It's way larger. Like double what you need. Please take the hint please take the hint and beef up other stats)
Jinwoo: I wonder if I can find another one...
System: (fuck, time to change tactics)
Jinwoo: *kills another caster*
System: (ok here we go. Let's try a MAGIC dagger you need INTELLECT to use)
Jinwoo: ...oh, what's this? I can't use this junk. *sells it in the store*