Bernard Gutierrez is one of the co-founders of The Union, an organization of cosplayers wanting to make the world a better place through cosplay. Their team is usually hosting fundraisers for selected charities while spreading awareness on different civic issues relevant to their community. Welcome to the Wisteria Inn is The Union's second event, a Kimetsu no Yaiba-themed fanmeet held last March 1, 2020 at the Kazoku Restaurant in Quezon City.

The fanmeet gave customers the opportunity to interact with their favorite Kimetsu no Yaiba characters as they raised money for the World Wide Fund for Nature (WWF) Philippines. Through this event and associated ticket sales, The Union was able to raise Php 13,800 for WWF. The Union chose WWF because the group wanted to direct its efforts towards the protection of the environment, and they felt that supporting WWF's initiatives on wildlife conservation and restoration of habitats and ecosystems would best help in saving our one shared home.