The Masked Truths Digital:
Kaia Chains is 17
Koyu Mori is 18
The Birthmarks of the Dark World:
Dark-Fire is 15
Hana/Hope is 15
Noise is 16
Harmony is 14
William is 13/14
Hooded man is 19/20
The Gun-Scythe Legend/The Magical Gun-Scythe
Keina Blanca is 17
Ava Lone is 20
"Elder" Fabi is 25
Xojin Song is 17
Dreams of Feathers and Wings
Allie is 15
Rina is 15
Dream boy has a real but it is spoiler is 15
Red Guardians Deities and Demons Contractors!
Kenya Keys is 15
Tora Inui is turning 16
Blake Morales is 17 almost 18
Taiju Ku is 17
Mai Ku is 17
Drake Keon is 14 almost 15
Guard/Connway looks 13/14 but is 50-100?
The Story of Humanly Monsters or Monsterly Humans
Kippy Blaze is 15
Lydia/Danny is 15
Ren Ion is 15
Mrs. Blaze is in her 30s so is Mr. Blaze
Danny's father is over 50
Ren's father is over 50.