Hallow is Seer's biological child and first that he took care of, Seer loves him and takes care of him.
Hallow is the sibling of Acid though adoptive since Seer adopted him, they fight often though this dosnt hinder their relations.
LN2 was never that close to Hallow when he was in seer's care.
Hallow is friends with Candle Light, he secretly have a crush on them.
They tried to scam Seashore & Tea.
They tried to scam Seashore & Tea.
They did not have much of a relationship.