Simplify the following text for a Grade 8 native English-speaking person.
Original: Separated from the Texas Battalion while on a raid , Agustin became lost in the harsh jungles of Korea only to encounter an exiled Japanese warrior and assassin known as `` The Black Cat '' .
Simplified: Separated from his battalion , Agustin was lost in the harsh jungles . There he found an exiled Japanese warrior and assassin known as â Nuro Nekoâ ( '' é '' ' ã ç `` '' - black cat ) .