raiden shogun by yusui

Noah rocketed towards her, and for one brief fraction of a second, he saw the shock in Valia’s eyes from his boosted speed. He, too, was surprised, feeling like he was wearing his anti-paladin cloak. It was natural to feel lighter and faster after removing weights, but removing the headband was a new definition of liberating. Valia intercepted his attack, but only just, and Noah rained slashes and stabs upon her, putting her solely on defense. She was forced back, unable to maintain her position with such a ferocious chain of attacks hammering her defenses. Finally, Noah slipped past her guard and held the tip of his sword up to her throat.

idk if you've played chaos;head (or watched it, I never saw it so idk if it's in the anime) but it's set in the same world as steins;gate (which I've watched but never played) and things the eyes see but the brain doesn't process are a literal plot point, you could almost certainly make a fairly lore accurate manip with that if you like this world.

“Well, Jim, that’s about to change.” I could feel her hand searching for my fly. The zipper made a soft ripping sound as she slowly opened my pants and reached inside for my stiff dick. “I am going to take care of this problem for you. You can’t recite Shakespeare with a boner like this.” She kept her gaze fixed on me as she slowly dropped to her knees while gently rubbing my cock. Once she got face-to-face with my member, she swirled the head with her tongue.