Pretty meh cliffhanger. We know that Jin-Woo made one of the 4 orc elite guards his sister's bodyguard so as soon as Jin-Ah is in direct danger the shadow will come out and wipe the floor with these orcs.
Her calling Oppa! In her head really got me. Desperately hoping for her big bro to come save her and her friends. I feel it.
Dammit! Now we wait again.
Insert meme "Hero arrives late but just-in-time to save loved one @1HP, so that he can flaunt his greater than raid boss powers".
Author suddenly dumbs down MC and have him waste his lifesaving Instant-Shadow-Teleport (which is on a bloody long CD timer) to travel to a Dungeon entrance when MC already has an epic flying mount.