An artist we have, largely unknowingly, seen much of in various fine images lately is カントク / Kantoku, with the circle 5年目の放課後 / Afterschool of the Fifth Year; his art is absolutely first rate, so an introduction is in order.
Below you see representative sample of his works; since they total some 500, all of a similar level of quality, you can see all of them on the Channel, where you can also obtain extremely high resolution versions of some (the pantsu bereft girl above has a particularly huge version).
He does have some ero output…
Kantoku is another artist who is sparing with personal details, so we will have to know him just as a master illustrator and doujinshi creator (unless you prefer pianist and hiker); he is yet young, so doubtless he has a promising career ahead of him.
You can browse his homepage, where you can also find much information on his past and future doujinshi releases, which look to be well worthy of purchase.