This is a top-down, seamless lace pullover, knitted in DK weight yarn. It is knit flat until joined in the front for the body, then worked in the round, with set-in sleeve stitches picked up and worked in the round, shaping sleeve cap with short-rows.
This sweater includes some unusual techniques to accomplish the feat of not having to cut your yarn. The stitch pattern is adapted from “250 Japanese Knitting Stitches: The Original Pattern Bible” by Hitomi Shida, stitch #004.

Sizes: Charts are given for 3 sizes: S (M, L) corresponding to 39 (46, 53.5) in/97.5 (116, 134) cm finished chest, depending on your gauge. Lace is inherently stretchy, but your best size will depend on chosen yarn and gauge achieved. Waist and sleeve shaping may be accomplished by using smaller needles if desired.

The pattern is 26 pages, and all parts of the sweater are fully charted, with 7 charts for each size, one per page, so you can simply print out the charts you need for your size.
This sweater is fun to knit, with intricate and detailed stitches on every row, but if you can follow a chart, this will be rhythmic, satisfying and logical to knit.