Monochrome Factor

Synopsis

Kou got back and opened his door, looked at his fish when he someone was in his house. A prince from a small place in Europe comes to visit Kou, with the excuse that he misses Kou. The truth is, he was being assassinated. Kou brought him to Master's bar where he called out the others to meet him. Mayu barged in announcing that she has found another 'ikemen' besides Shirogane. Shirogane kept annoying Akira by asking if he was more beautiful than Prince Andrew, who was then given the nickname 'An-chan' by Kengo. Said prince followed Akira and co. to school to experience how it is like to be in a school (the prince has a tutor who comes to his palace to educate him, thus, he has no idea what a school looks like). He was instantly surrounded by love-stricken girls and started asking him questions but he looked uncomfortable when one of them complimented his beauty. Haruka invited the whole gang to his house and an assassin missed his shot, the bullet went into one of the pillars, and in turn was captured by Kou (he chased after him). He points out that it was An-chan himself who hired the assassin because he wanted to frame his younger brother, who turns out that he actually admires and adores Andrew. Andrew ran away from them and ended up in a forest where he got possessed by the Kokuchi, called forth by Ruru, commenting that she finally saw a human with darkness in his heart. It got defeated quite fast after being awakened by Kou's words(and a few punches from the others of course). When Andrew woke up, he saw his horse standing next to him and the so much rumoured younger brother, George, turned out to be not so flattering. Shirogane pointed out that the prince's country has a different views of handsome people. George and Andrew went back with their own horses, Andrew being the Prince of the White Horse. Andrew asked Kou one last time if he will consider the offer he made, but Kou stood by his decision and the brothers finally left.

(Source: Wikipedia)