I Really really liked this anime from the start of.
This anime has everything almost every types of girls in anime! ( Tsundere Imoto-con etc. )
The first Arc of the stort Thad went on for about 8 episodes whitch went for the first main girl i guess whille he was going for thad first main girl they set the story and scene and mood for all the other girls comming at the endign part of the anime its like 4 girls witch he meets in the story in different scenes to set those scenes as a basis for the 1ep each girl ending arc.
So in a complex way they made it like this 70% main girl 30% others whille there actualy isnt a main girl they made it thad way thad it seems like it but all girls get about the same schreen time and love arc time so theres basicly not any difference between the different storys in this one anime.
Basicly i realy like what they've done and i realy will watch a season2 if it would come out.
I pursonaly think there wont be becauze the anime ending was a closed ending so theyre isnt any reason to exist. Raison D'etre :D Code Geas ref.
Basicly Watch it if you would like its a epic masterpiece of an anime!