First Person
noun
The one person title is the title one person gives themselves. They are speaking in the first person.
いちにんしょう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
このホラー映画は、一人称の視点から撮影されています。
This horror movie was shot from the first-person perspective.