Yes it is the end.
It energized quite eruptly. But it's okay I found the sequel manga now.
Sequel manga?
this is the sequel to this http://www.mangago.me/read-manga/tsubasa_world_chronicle_niraikanai_hen/
you can also find the group travelling in Kobato anime. I am not sure for cardcaptor sakura clear arc whether they went there or not ^^
AHHH THANK YOUU
Is this the end? Eventhough it still mark as ongoing but the last update was in 2014 T_T