so it's about this lady that lives with her girlfriend and her girlfriend's son from her previous partner who died.
there's also this male upstairs neighbor who comes the visit the child often because the child is the son of his male ex-partner, he was same one that died.
the child is really cute and considerate of the people around him. and the mom works for a call center (i think)
it's been on my mind for a long time and i just can't find it

The only thing I remember from this manga is that the main couple confessing cause a chain reaction of everyone getting courage to confessing to their own crush
I wanna read this