Everyone wants to say something to the younger generation.
I'll tell you some of the wishes:
China; He wants to give his knowledge to the younger generations
USA: He wants that everyone is happy with their body.
Russia: He wants to protect everyone from harm. Especially from his country.
France: He wants that everyone finds their soulmate and live a happy relationship.
UK: He wants that they are free to say what you believe in.
Canada: He wants that everyone will have true friends.
Germany: He wants that they respect everyone. No matter what they have done.
Veneziano: Be happy, like spaghetti! (...I write it like he responded.)
Romano: Don't compare others with someone.
Spain: Don't hate those who hate you. Talk with them, why they hate you.
Or keep a smile up!
Japan/Myself: Forgive those who yu love, but don't put too much trust in those. Some secrets rather stay with you.
Prussia: If I know something, than it is that they should never hate someone for being himself.
Hungary: Sex and Gender doesn't play a role. Be yourself or take a frying pan and smash those people who doesn't accept you with it!
Austria: Don't underrate something. It may lead to your death.
Switzerland: The true treasure isn't money, but your family.
Liechtenstein: Showing that even small and weak persons can make it to victory
Lithuania: Believe in yourself, Let nobody destroy you. You are yours, not somebody else's.
Estonia: Be smart and start!
Latvia: Don't hate or be afraid of something you don't know.
Belarus: Love is rare, be with whoever you want. If they reject you, they aren't worth it.
Ukraine: Don't like someone for their body... Like them for their character!
Sweden: Don't let someone destroy you.
Finland: I want everyone to have parents who love their child for what it is!
Norway: Stay with your trusted ones. They could fade any moment.
Denmark: Stay with you soulmate. He could fade any moment
Iceland: ...I want to bring the believe in Magical creatures back. They don't deserve to be forgotten. Look, England's Flying Mintbunny is happy!
I guess this was it.
Sayounara
-Nihon-Teikoku