From 2D Market:
Manage! Kimemasu!! is an eroge visual novel, developed by Gekidan Kinmirai and published by softhouse-seal in 2011. The main character artist for the game was Unagimaru, who also happens to be the artist behind Kabayakiya. Therefore, this book is a kind of (to use Unagimaru’s own words from the afterword) "self-doujinshi", featuring characters designed by Unagimaru for "Manage!" game.
If you’ve never played the game, you can hear the samples of the character voices on the game’s webpage. Some of them are even taken from the ero scenes~
Story of the doujinshi is fairly straightforward and centers around an up-and-coming member of the baseball club getting a reward of his own choice for good performance. Since the one giving him the reward is the sexy student council president, you can surely guess what his request is going to be...