There isnt a TG route just yet, but the highest chance of that happening is likely during the mothra route or in a later update as its own thing, most likely the latter, though as far as i know it isnt LIKELY to come around at all, there is a chance it might happen, its all up to the devs and their amazing writers.
And as for a corruption route, considering the overall tone of the game and how plain old kind the MC is, i doubt that will happen, and if it does itll likely be apart of optional content thats unlocked after a finished route