Thanks for giving it a try! Other than bringing more girls to the church there is currently no further interaction with Liam's side of the story.
It's supposed to be an exploration type game so I thought it should be alright to give the player a variety of things they can be doing, whether it be gathering materials for a puzzle or trying to finish a quest. I think that it's just not all introduced in the most optimal way right now. Maybe a playable intro where they get to familiarize themselves with the game's flow and controls?