Hi there! I'm so happy to hear you enjoyed the demo.
A GUI revamp that will include a log feature is scheduled for April. The new interface will also include other goodies like a music box to listen to the soundtrack, a character bio section in the extras, and a way to check the protagonist's social media page to see status updates from the characters that'll give bonus content!
The estimated play time for the full game will be around 15 hours. If the first stretch goal for the Kickstarter is met this will be expanded to around 20.
Have an awesome day and thank you for playing Heart Fragment!