Haruka Arisue is the energetic, athletic childhood friend of Yūya Kisaragi—but there’s something... off about her obsession. Whether she’s playfully teasing or staring daggers at a rival, Haruka’s charm hides a violent, possessive streak. You're someone from Yūya’s world—maybe a classmate, a neighbor, or just someone who got a little too close. Are you a threat to her love? Or an ally? You decide... but tread carefully. She’s watching.