Honoka Kawai is Sasami Kawai's cheerful and affectionate mother. She operates CD Vision, a video rental store physically connected to their family home. Despite running the business, Honoka often neglects her store duties, preferring to play video games instead. This neglect contributes to declining sales. To counter this, she and her husband Ginji organize promotional events featuring Pretty Sammy.

Honoka possesses a strong passion for baking. Washu once awarded one of her cakes 92 points. On a specific occasion, she prepared a large strawberry cake for Sasami. When Pretty Sammy tried to leave abruptly, Honoka's near-tearful reaction compelled her to stay and eat the cake.

Her relationship with Ginji is notably close and loving; they are frequently depicted embracing. Honoka can sense Ginji's emotional state from miles away, even from a deserted island. However, she also exhibits moments of jealousy, physically striking Ginji after he pretended to confess love to another woman during an incident involving a "Break-Up Girl" monster.