I'm sorry Daigo-kun... I'm sorry for never telling you that I'd recovered this far already!
To be honest, I wanted to keep it all secret until I was able to show you all that I'd fully recovered. Hey Daigo-kun! I wrote it in the letter too, right? That we'd form the ultimate battery some day? I can't run yet, but in middle school, I'm going to join the baseball team. I promise I'll get back up! So... Daigo-kun, you have to promise that you will never give up the baseball you love so much!
Apparently, he didn't tell us because 
he didn't want us to talk him out of it!
!يبدو أنّه لم يخبرنا لأنّه لم يردنا أن نقنعه بعدم الذهاب
Er hat es verschwiegen,
damit keiner was dagegen sagen kann.
¡Dijo que no nos avisó
para que no lo detuviéramos!
¡Dijo que no nos avisó
para que no lo detuviéramos!
Il est parti sans rien dire
pour pas qu’on le retienne !
E che non ce ne ha parlato perché non voleva 
che provassimo a fargli cambiare idea!
Ele disse que não nos falou porque
não queria ser convencido a não ir!
А молчал всё это время,
чтобы мы его не отговаривали!