Kaichou-san Chi no Koneko

Because of his much-too-strict character, the excellent and capable student council president Hayami Reiichirou is often isolated from his surroundings. But things change when, one day, he is forced to take care of a kitten he received from his workaholic mother who divorced his father and left the family long ago. Seeking help from the student council's resident cat-lover, Shiraishi Kotoko, the once stern and unapproachable Reiichirou begins to…?!

Also contains the story Gakuran Ouji:

Kiyomi has secretly been using the prince of her school, Narumi-kun, as a model for her manga, "Gakuran Ouji."
Why is this? Because of how elegant and perfect Gakuran looks on him, of course!! Even Narumi-kun is unaware of his use of image in Kiyomi's manga until one day, Kiyomi accidently falls and drops her drawn images infront of him..