Although the Reaper of Souls was considered overpowered, it did possess a clear weakness. The fact that it could bypass anything meant that everything would go through it too. In other words, it couldn't be used for defense! 

Thus, Galmoss had several weak points. However, there weren't many players that could take advantage of this due to Galmoss's tremendous attack power. Even the best tanks were killed within 3 seconds!

Let's assume you manage to get a hit in, but it counterattacks simultaneously. You might've done some damage, but you'd get hit by the Reaper of Souls. No one could withstand a direct hit from its blade.

Thus, aiming for its weak points was risky.

At the same time, Kang Oh had to draw its attention, which meant attacking it too. If he didn't, then it'd turn its attention to his teammates and rip them to shreds!

Ultimately, only a player that had the willingness and the courage to take such a risk was capable of fighting against Galmoss.

'Someone like me.' Kang Oh unhesitatingly aimed for a weak point.

Swish.

Demon Sword Ubist cleaved through its shoulder, and red shards of light leaked from in-between. Abyss Blade was capable of hurting Galmoss...