2025-04-18（金）18:30 - 21:30 日本語の案内は英語の後に記載してあります。 Hello Rubyists! We're excited to announce that ESM, Inc. will be a Drinkup Sponsor for RubyKaigi 2025! Join us on the evening of April 18, the last day of the event, for a drink-up party to discuss your thoughts on Rub…