Seasonal Dream Vision is a semi-official Touhou fanbook.
(東方紫香花, literally Touhou Shikouhana, meaning Incense of Violet Flowers)

It is quite similar to Bohemian Archive in Japanese Red, as it features comics, a music CD, and a story by ZUN, all about Gensokyo.
It ranges from drama to comedy, all focused on the strange world Touhou takes place in.

Contents
Comic

• pg.004: Sakura~ I Wish~
• pg.012: Clover and Promise
• pg.024: Eastern Azalea in May ～Nightingale～
• pg.040: How to Grow a Blue Rose
• pg.048: Evening Primrose - Free Heart
• pg.070: Snowdrop Winter's Gift
• pg.084: Sakuramochi
• pg.102: Scarlet Anemone
• pg.109: A Night of Ten Thousand Flowers
• pg.117: Mountain Green, Blossom Blown
• pg.127: Eternity / Akizakura - cosmos bipinnatus
• pg.135: Seeing Cherry Blossom in mid Autumn

Story

• pg.171: A Beautiful Flower Blooming Violet Every Sixty Years, written by ZUN
  This Chapter 13, containing only text, is available here