Kiyoko's closest sister who runs a clothing store with her late husband. After his death, she uses life insurance money to address Ritsu's claims and funds the opening of her own coffee shop. She later goes missing, prompting her mother to search for her.
Closest siblings who share a bond despite family tensions.
Dual relationship blending professional collaboration and romantic entanglement.
External pressure forcing Mitsuko to allocate funds.
Sisterly financial dependency creating tension.
Explore the full interactive character relationship map of Lightning