Calcara

Calcara (カルカラ, Karukara) is the youngest brother of Tetra and the only son of Teto and Calra.

Plot
He is carried by his mother.

Calra
Calra is Calcara's mother and as a baby, he is attached to his mother without really being aware of it.

Tetra
Tetra is Calcara's older sister and he accepts his sister by giving her a smile and he lets himself be carried by her without crying.

Sariphi
At first, Calcara refused to be touched by Sariphi but then he accepted Sariphi without crying.