Searching for something I read a while back

One is were the protagonist enjoys car rides with his friends older sister for getting her hair done, they smoke in the car as well I think not sure
The other one is a college guy who is a hit with the ladies but helps a weird girl who covers her eyes with her hair by giving his umbrella to her and he notices her stalking him only to find out she was trying to get him alone so that she can return his umberlla back to him
and the last one is about a mature architect or interior designer and her young assistant who happens to be her best friends son.

Not sure if they were by the same artist or maybe I read them around the same time,either way if you can match any it would be a huge help.

First and last should be from Asagi Ryu's 'Loving an Older Woman" tankoubon.

Arigato Luinthoron

If anyone knows the artist of the second one as well,it would be much appreciated.