Confident and somewhat playful, Riruka appears to be an impatient, hot-tempered young girl, that unleashes her wrath even towards her comrades if they disagree with her. She claims to be with her group only for her own agenda and not out of any loyalty to Kūgo. She is extremely talkative and is capable of having ongoing one-sided conversations about irrelevant topics. She suffers from extreme myopia but avoids wearing glasses out of her vanity and claims contact lenses make her large eyes go dry too fast.
Riruka's Fullbring gives her the ability to freely move people and objects into or out of anything that she adores or finds cute. Riruka refers to this as an ability of "love," which allows her to draw out the maximum power of anything she falls in love with. To achieve this, she generates a small, heart-shaped "pass" in her hand, which has the letter "R" on it, and then launches it at her target. Once the pass has been attached, she can transfer the target into an object with the command, "I permit you." The target is shrunk down to accommodate for the size of the object she is transferring it into. She deactivates her ability by sneezing on the object, returning the ones she placed into it to normal. Additionally, if the container affected by Dollhouse is destroyed, its contents are forcibly ejected.
Informations Source: Wikia