Fixing bugs and adding new maps within the game. — 悠卡和她的夏天 Steam update #500325

Because many players were getting lost in the first level's puzzle, the map has been updated with additional markers to indicate the player's location. Additionally, the school level now features information on the use and conversion of game items written on the blackboard, as well as a new puzzle that, while not complex, requires players to refer to the information on the blackboard.