This is a relatively small update, but it contains two new gameplay features:
Ema tablets
Ema are small wooden tablets used in Shinto shrines to write your wishes and prayers. You can buy a blank tablet in the shrine shop, write your wish on it, and put it on a stand near the main shrine building. Currently this feature doesn't affect your relationship scores in any way, it was added for authentic recreation of a typical Shinto shrine.
Tomato kiss training
Since a few people were confused in the past by the rules for pocky/kissing mini-game, now there is an optional training mode. You can use tomatoes to train your kissing skills before using them on your girlfriend. The platform for tomato training is located near the convenience store entrance.
There also are a few minor updates and bug fixes (full log can be found on the game's website).