|Hair||Ponytail, Spiky Bangs, Straight, V Bangs, Violet, Waist Length+|
|Body||Flat Chest, Pale, Slim, Teen|
|Clothes||Arm Warmers, Cape, Crop Top, Fingerless Gloves, Spats, Unusual Hair Ornaments, Wings|
|Personality||Competitive, Immature, Rude, Short-tempered, Sweets Lover, Third Person, Violent|
|Role||Butt Monkey, Cupid, Rival, Younger Sister|
|Visual novels||Side character - Koi iro Chu! Lips|
|Voiced by||Oukawa Mio|
Karen's stubborn sister and rival. Aisa's primary goal is to prove once and for all that she is the better Cupid of Love out of the two. Persistent to reach her goal, Aisa constantly challenges Karen in hopes of beating her, but ultimately never wins.