These series offer a mix of dark fantasy, supernatural elements, and complex characters, which are similar to the themes and elements present in Succubus Senki.
The story revolves around Yuma, a high school student who becomes involved with a group of supernatural creatures known as "Succubi." These creatures are tasked with collecting the souls of humans to sustain their own existence. However, Yuma finds himself caught up in their world and becomes a key player in their battles against other supernatural entities. Succubus Senki