This game has nothing to do with its predecessor
Like most people have pointed out, the main problem with the game is in the puzzle involving arrangement of the Students, and their respective Foods. Out of the clues given, I could only use Clues #2,5 and 7, to arrange the Bento, Ice Cream, Fishcake, Keigo and Catrina. From my perspective, the other clues are useless.
I cannot see how the Zodiacs, and Hobbies are connected in anyway to the characters. And I've seen the Youtube Video Guide, which disappointingly did not explain it either. No elements in the game showed any signs/clues as to which student had which Hobby, or their Birthdate. There is therefore, as I deemed it, NO WAY of finding it out. The clues are probably left out as a mistake?
I don't know how some people like the user below named [mattblack] managed to solve this, unless through the method of trial and error like the others have suggested.
This sequel in my opinion is not as good as the first. And for those of you suspecting that the clues given here may be obtained from the first, rest assured, it is unrelated. I've tried the first game myself to prove it. I'd say this game is bad for the 4 years in it's making.
For those looking for a puzzle game that's solvable by wits rather than luck, look elsewhere, for this will leave you bald from over-scratching your head.