"Hatsukoi" by Kazuharu Kina. This is one of my favorite artists, particularly with the soft edges and colors in all the girls' uniforms. 125 pictures are collected here, plus an extra booklet of rough drawings. Most of the pictures are online[1][2], including one that was in the Drawing with Wacom series[3]. Still, it's great to see all these printed in one nice and large volume.
[1] http://kazuharukina.info/
[2] http://www.pixiv.net/member.php?id=22419
[3] https://www.youtube.com/watch?v=S3BgjjQJ7rM
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