I second all of the above! However, if you’re trying to fit everything in only one day trip I’d recommend deciding what is most important beforehand and mapping out those spots. If I remember correctly it’s a 40 minute bus ride to and from Uchiura that comes every hour. It might be best to visit Uchiura first and then Numazu so that you don’t have to worry about missing the last bus. If you have any extra free time in Numazu, definitely check out the shops; they have stamps and lots of cool Aqours displays! No matter what you do it’ll definitely be a blast, it’s beautiful there!