Wammy's house is an orphanage created by Watari (Quildish Wammy), now L's butler, many children stayed there, but those who stayed were Matt, Mello, Near and Guest, the latter being the the only girl among those left at Wammy's, these four children had to stay being cared for by L, who despite being very direct and insensitive at times (and his appearance was somewhat unkempt (since he had dark circles, disheveled black hair and some insomnia) he had to stay with the children, although she was a disaster to say the least when it came to taking care of children.

Today, it was raining and Matt, Mello, Near and Guest had to stay inside the orphanage

Mello: Eating a chocolate bar while looking out the window

Matt: playing with a Gameboy

Near: Playing with some superhero action figures while sitting next to the chair where L was

Guest: you are doing something idk but you're too quiet