The official Japanese Pokémon website has announced that there will be special Halloween themed menu items available to purchase at the
Pokémon Cafe from Saturday, September 8th, 2018 until Wednesday, October 31st, 2018.
Pikachu's Halloween Greedy Plate 1706 yen / Pikachu's Halloween Greedy Plate (including plate) 2894 yen
ピカチュウのハロウィンよくばりプレート 1,706円(税込) / ピカチュウのハロウィンよくばりプレート プレート付 2,894円(税込)
Ghos' Meat Cutlet Burger 1706 yen / ゴースのメンチカツバーガー 1,706円
Monjara's Halloween Mont Blanc 1490 yen/ モンジャラのハロウィンモンブラン 1,490円
Golbat's Toxic Float Drink 918 yen / ゴルバットのどくどくフロートドリンク 918円
Pikachu's Halloween Chestnut Latte 918 yen/ ピカチュウのハロウィンマロンラテ 918円
From October 1st, 2018 until October 31st, 2018, while supplies last, you can get a lunchon mat and clear coasters with your order. The clear coasters come random (1 of 6) if you order a drink, or you can choose to get them separately. They use the theme of the latest Pokémon Center themed artwork.
Source:
https://www.pokemoncenter-online.com/cafe/news/180907_01.html