So Raru gets her letter from Ryu. And yes its similar to the one Moon wrote to his team. That's mostly because Ryu isnt good at writing stuff for other people. And Moon helped him write this since the younger boy doesnt have hands.... he has a tail, but no hands.
And yes Raru is crying. She liked Ryu and has not told him yet.
If you cant tell what the letter says, this is what it says :
Raru, Hey. It's Ryu. If you havent heard from the other members of Team BlackMoonHeart, our mission was a success. We sucessfully saved Jasmine and took her back to the town. I only have one thing to ask you and I think it might be the hardest thing I'll ask you. I need you to stay strong. The "Great Kee" says we may not return to your time. I dont know any of the 'mon here besides Moon of Team BlackMoonHeart, so I cant really say anything. But, I want you to be strong for me. If the worst thing happens, and I can not return, please talk to the leader of BlackMoonHeart. Have him help you train and become a stronger fighter. I havent really done anything while here, besides help other 'mon and Moon. I meet a Charmeleon named Mike. He seems nice. I hope to see you later, girl. Ryu