Not Arc but I can answer.
You are missing the leads because you missed a step on the main story progression. I'll list them, pick up where you left.
Gramps' invitation
* Check the manor's garden
* Take a train to Gramps' home.
Training begins
* Talk with Gramps
* Do martial training (all 4 levels)
Lost bird
* Talk with Gramps
* Go to the lake and search for the missing pigeon.
* NOTE: Check at least three times.
Main story begins
* Deliver the pigeon's message to Gramps
* Ask him questions.
* Now you should have the leads unlocked, follow them to continue the main story.
Also translations are going to be pretty much a near the end of the game thing.
Weekly updates make it difficult to even consider hiring translators.