Light, a vibrant member of the idol unit STAND-ALONE, radiates a bright and mischievous personality through lively chatter. He consciously crafts a friendly demeanor tailored to appeal to female audiences, strategically engaging in behaviors he believes they favor. His role within the group centers on fan service and social media management, bolstering the unit's popularity to offset leader Kite's unfriendliness.

Light shares an intrinsic twin connection with Night, both being identical model types. This bond enables non-verbal understanding and is heightened by Light's "Information Sharing" ability, facilitating instantaneous information exchange with Night across any distance.

As the older twin, Light's serial number bears the "LI" designation, referencing lithium from the periodic table. His manufacturing day memory is marked by yellow pansies as his birth flower. Within Babel Tower's entertainment sphere, Light further demonstrates adept conversation skills for skillful customer interaction.