Lux Acadia
Philphie first met Lux seven years ago and played a lot together since the Aingram House is associated with the Old Empire. Because they were childhood friends, they had a very close relationship and had nicknames for each other.
Since Philphie liked Lux, she wasn't bothered living inside the same room with him or even sleeping in the same bed with him sometimes.
Airi Acadia
Because Airi was Lux's younger sister, she get to know Philphie before the Old Empire's fall. Airi and Philphie's relationship could be describe as good.
Relie Aingram
Philphie got a good relationship with her older sister, Relie even though their personalities differ. Relie, however, got this mischievous side in her by bribing Philphie with sweets in order to get her little sister do something.