I have read comparably few of Saitou's works, but I really enjoy her older shoujo style and thus wanted to add one of her artbooks to my collection. Luckily, the work I am most familiar with - Waltz wa Shiroi Dress de - also has its illustrations featured here. All the cover art of that series and a few others can be found within as well as plenty more from other series which I am, as mentioned, not familiar with.
Traditionally coloured manga art is becoming scarcer and I am always mighty glad when I can add a lovely traditional one to my collection.