Working as a diplomat has always been hard, but the further back in history you travel, the tougher it is to even travel internationally.  In spite having served during the 8th Century, Abe no Nakamaro managed to successfully manage hist post in Tang China.
But it's good you stayed behind. 
The others are grateful!
Pero qué suerte que te quedaste.
Mis compañeros te lo agradecen.
Mas foi bom você ter ficado,
os outros estão gratos por isso também!