Trinity is a very young girl probably around the age of 7 years old she is selectively mute and only will talk around people like her family or people she trusts 100%. She is completely quiet otherwise. She is in training to be a Demon Slayer and her Sensei is Shinobu Kocho. She has a very shy sweet and gentle little personality she doesn't usually hurt or harm individuals and if people yell at her she immediately shuts up she just stays quiet and takes it.