There are many special achievements in "Silent Luck", and Friendly Introduction is one of them. If you want to achieve this achievement, you only need to find Corey hidden next to the TV. Players can find it on the left side of the TV. Corey was found hiding in the gap at the back, which was quite scary.
How to make the Silent and Bad Luck Friendly Introduction achievement
Friendly introduction
Find Corey hiding next to the TV
Taking Responsibility (Chapter 5)
Find Corey hiding in the gap on the left rear of the TV (the sound effects here are a bit scary o(TヘTo))