Kai-u (a Touhou LW original) refers to a phenomenon where whirlwinds blow animals and fish into the air and drop them on the ground like rain. This is an apt temperament for Sekibanki, who can float many heads in the air. Sekibanki is endowed with Fire Phase, for her hidden passion, and Star Essence for her resolute independence. The formless and passionate Fire Phase resists Wood Phase, because wood feeds fire, but it is weak to Water Phase, because water dampens fire. The diverse and uncooperative Star Essence resists the cooperative and indecisive Moon Essence, but it is weak to the charming and arrogant Sun Essence.

Sekibanki's ability as a rokurokubi. By watching how she fires her bullets, you can see that she is both the type of rokurokubi that detaches their head from their neck and the type that elongates their neck. The type that can detach its head has apparently existed for longer. A famous artist once portrayed the rokurokubi with a line connecting the head and torso to show that the head was floating in the air. However, this seems to have led to the misconception that there are rokurokubi that can extend their necks. There is a theory that the head-detaching rokurokubi originate from the hitoban youkai of China. The stories and legends of rokurokubi have been told in many different time periods and lands, and they are even a popular theme for rakugo performances. They are also the subject of many paintings, but these are not necessarily based on specific tales of rokurokubi youkai―It seems they are simply valued as a good subject for youkai artwork. Rokurokubi are one of the most well-known youkai, but there are probably very few in the outside world who actually believe in their existence. Sekibanki is a peaceful youkai who lives in the Human Village while hiding her true identity. Rokurokubi are familiar with humans to the point that they are no longer feared... and perhaps this is one way she has chosen to present herself in Gensokyo.