I will be honest, I only watched this because I wanted to see how it played out, I wasn't too surprised as most of it was somewhat expected.
First the story - boy gets 2 sisters ( not his sisters mind you ) living with him, ah a classic love triangle, right? Wrong. it turns out he is scared stiff of women due to an incident with two sisters in his youth. I won't spoil anything there.
Art - Here's where I feel it falls short, The art was okay for the first episode, but I think the art did a massive change in the 2nd episode, being from 1990 you can't really rate it higher either.
Sound - a lot of dialogue composed of "Ah! Yuusuke-kuuuuun" gets on your nerves after a while, but it was okay I guess.
Character - given a 4 because that's literally how many characters there are, not much to say apart from the fact just having the 2 sisters and Yuusuke.
Enjoyment - for a show from over 20 years ago it wasn't that bad, it was similar to the KissXSis of that era, I suppose.
Overall - Fair Number Six
