Ahh, thank you! I never get tired of our blanket-fort hills and monumental oaks; it's a landscape that always feels full of stories to me, so I'm excited to be able to share one!
For your question: all five of the main characters (John, Marybeth, Patti, Sparrow, and Jasper) have their own story paths and are romanceable. ❤️ Friendship runs are also supported for each of them as well.
Jasper is the only character whose story is locked on initial playthrough; while I consider all of the character paths equally valid, understanding Jasper's version of events requires information revealed in the course of the other routes, so it becomes available upon completion of any one of the other four character paths.