1) When Lloyd can't sleep Harumi will sing him lullabies.
2) Harumi and Jay have an older brother/younger sister relationship from bonding over being adopted.
2a) because of this if Lloyd can't comfort Harumi she goes to Jay.
3) Harumi cut her hair after The Merge so now it reaches just above her shoulders.
4) Lloyd calls her Rumi and Jay calls her Ru. The others just use her full name.
