This Rui Ayaki figure is released by Banpresto in their Oni no Sou x Demon Slayer statue figurine series.
Rui (綾木 累) is the primary antagonist in the Mount Natagumo Arc of Demon Slayer: Kimetsu no Yaiba. He is a demon affiliated with the Twelve Kizuki, holding the position of Lower Rank Five (下弦の伍). Rui has the appearance of a young boy of short stature. His skin is white, with red dots. His hair is light pink and bears resemblance to spider legs. The sclera of his eyes are red, while his irises are pale blue. Due to holding the position of Lower Rank Five, Rui has the kanji of Lower Rank (下弦) and Five (伍) engraved into his left eye, signifying his ranking of Lower Rank Five.