A Lie-Flat Life from Love Apartment to Ode to Joy

The male lead transmigrates into a world of movies and TV shows, becoming an orphan living on the streets. Only after growing up does he realize he has transmigrated into Love Apartment. But where did Shengxuan Group come from? And Andy is actually my older sister...

Wait, why is Xu Hongdou here too?!

Love Apartment + Ode to Joy + Meet Yourself, with characters from other TV shows possibly making appearances as well.