During her younger years, she and her twin were very feared kids, infamous amongst guilds and criminals. She was rather temperamental and bad-mouthed everyone. Due to a past incident regarding the pseudo death of her sister, Lisanna, Chikaku’s bad behavior became more unhinged. Unlike her twin, Mirajane, who becomes a more loving person, Chikaku becomes a more vain and arrogant jerk. She always views her twin and her siblings as very weak, always bullying her own twin for her kind personality.