For those that missed it, the Dad was barely present because he spends most of his time working. His wife was gay, and since he was barely home, she decided to act on it and ditch her family. His daughters only had each other for emotional support, especially his youngest. Instead of finding a way to become more present in his family's lives, he tried to control them by separating everyone. Meguru had zero positive role models to learn how to manage her feelings.
Dad- Absentee, strict father.
Mom- Gave up on her unhappy family
Older Sister- Unable to properly explain why sister kissing is forbidden, forced to move away as a band-aid solution.
Meguru- Emotional wreck neglected child, gay, had no one she could confide in and grow up with.
In conclusion, her family was useless. Meguru needs therapy and stability.