Darkness has a personality that is completely on the defensive, and her attacks, both verbal and physical, don't have much offensive power. However, when she's on the defensive, she is frighteningly strong. Darkness can withstand any attack, both physical and mental, or rather, she probably wants to be attacked. We will introduce this masochistic Darkness.

Unable to land attacks, Darkness charges forward with all her might!

Darkness fighting on the front lines
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee

Darkness, who cannot land an attack, asks Kazuma to add her to the party as a shield. Darkness's durability is extremely high, so using her as a shield should be a plus for the party, but Kazuma is reluctant to let her join. Kazuma noticed something dangerous in Darkness's eyes when she mentioned using him as a shield and the possibility of being eaten. "Ah, Darkness is a masochist."
Anyone would notice it when they saw the look of ecstasy on Darkness's face when she said she wanted to go all out. She was blushing at the prospect of the painful events that were about to occur.

Darkness blushes at Kazuma's cruelty, which everyone around her is shocked by.

Darkness blushes as Kazuma pulls away
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee
When Kazuma steals Chris's pants and Chris exposes Kazuma's actions in public, the women around him are shocked, but Darkness is the only one who listens with a blush on her face. He probably wanted that to happen to him. When he stole Megumin's panties, he said he'd never forgive her and asked to be let into the party, but Kazuma again quickly said he didn't want him, causing him to show an expression of ecstasy. It was amusing to see Megumin step back with a worried look on her face.

Safe even after receiving a direct hit from an explosion

Darkness survives an explosion
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee
After that, we found out that Darkness was a Crusader. Kazuma was worried about Darkness, who was happy to be attacked when he saw her taking part in the battle against the cabbage horde, but Darkness was praised for her ironclad defense and was able to join the party safely.
Kazuma also praised Darkness as a beautiful, extremely masochistic woman.

Darkness wants to be mentally attacked as well

Darkness receiving mental attacks
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee
Darkness doesn't mind being harshly insulted, abandoned to buy time, or humiliated in her adventures, and it seems she imagines such things on a daily basis.
Darkness will likely experience being insulted and humiliated in battles with the Demon King's executives, so perhaps choosing Kazuma was the right decision.

Darkness humiliated by Kazuma in the bath

Darkness bathing with Kazuma
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee
Kazuma, who mistook it for a dream about a succubus, boldly soaked in the bathtub, waiting for Darkness. He wrote in the questionnaire that she was a beautiful and well-built older woman, so he thought that Darkness had appeared in his dream.
However, Darkness, who had been truly humiliated, went red in the face and was unable to think clearly. While Darkness panicked, fearing that Aqua and Megumin would find out about her bathing with Kazuma, Kazuma urged her to hurry up and wash his back, causing her to blush.
Unable to resist when he so boldly told her not to, Darkness finally began to wash Kazuma's back. Just as it seemed that Darkness' sanity would finally break down as Kazuma's demands escalated, telling her not to use the towel, she was saved by Aqua's voice saying that she had found a succubus.

Darkness uttered harsh words at the succubus who had caused her unexpected humiliation, so it seems that even within her own mind, there is some humiliation that is not good.

Darkness Summary

Darkness closing in on Kazuma
Source: KonoSuba: God's Blessing on this Wonderful World! © Natsume Akatsuki, Kurone Mishima/KADOKAWA/KonoSuba 2 Production Committee
So Darkness, who is mentally and physically strong and impenetrable, is more qualified to be a crusader than anyone else. She's not enduring it, she's converting it all into a reward. Darkness was tougher than any wall knight.

Recommended related articles