To rediscover and re-route lost connection with the core base and take the necessary risks to not jade audiences with copy-and-paste versions of the same film, I daresay this novel offering will bring about a heightened awareness for the film. Remember, box-office wise, the Pokemon films had been on decline ever since the Genesect movie which brought in around Y3 billion. However, the last film, "Pokemon: I Choose You!" usurped the downward trend and brought in Y3.41 billion at the Japanese box office with an opening weekend of Y516.2 million which was a whopping 60% higher than the Volcanion movie. Although the film did experience high nostalgic exposure due to it being the 20th anniversary movie, other factors such its viral videos, emotional output, and overall quality enabled it to topple previous Pokemon movie releases.
As of now, forecasts should be around Y2.5-3 billion, but should the marketing campaign and quality prove to be suffice and connect with audiences, anything north of Y2.8 billion is possible. Furthermore, the film is slated to open in July like previous Pokemon films, and will benefit from Golden Week, one of the most prolific times for the Japanese box-office. As for whether or not it will increase it is unlikely as PIXAR will release The Incredibles 2 next summer along with the One Piece film being released. Thus, as long as the film does not decrease by much, it can be deemed a success.