Crimson Sun (陽紅) is Crimson Homura's level 1 Secret Ninja Art in Senran Kagura 2: Deep Crimson. It costs 1 ninja art scroll to execute.
Homura takes hold of Engetsuka with both hands firmly gripped around its handle. She then takes a stance before swinging her sword violently in one motion. At this time, an immense amount of crimson energy forms around the blade, unleashing it in a ball-shape form. It hurls in the direction of her enemies, mowing down and burning anything that comes into contact with it. It's very linear, but travels the full length of the stage.
- While the translation for this ninja art is known as Crimson Sun, it is noted that in game, Homura calls out the name Yoh -(洋) meaning yang in original Chinese text.
- (in Chinese philosophy) the active male principle of the universe, characterized as male and creative and associated with heaven, heat, and light.