Days with My Lo-Fi Sister Opens Steam Page Ahead of Winter Launch
The game packages itself as a productivity tool first and a story second, with a Pomodoro timer, ToDo list and memo functions sitting alongside a fully voiced character, so its commercial test is whether a work-support utility sells at 1,500 yen to readers of the novel.
Key Facts
- Tailpot announced Days with My Lo-Fi Sister on October 22, 2026, with a release planned for this winter on PC via Steam at 1,500 yen including tax.
- Days with My Lo-Fi Sister is based on Ghost Mikawa's light novel Days with My Stepsister, and Mikawa writes the scenario and supervises production.
- Yuki Nakashima, who voiced Saki Ayase in the TV anime, records the character's full voice for the game.
- The game includes a Pomodoro timer, a ToDo list and a memo function, plus music file import and playlist customization.
- A CAMPFIRE crowdfunding campaign for additional DLC featuring Shiori Yomiuri is scheduled to begin at 19:00 on October 27 and run 45 days.
Reporting from 2 sources: 4Gamer.net, Automaton.
Tailpot announced on October 22, 2026 that its work-support adventure game Days with My Lo-Fi Sister has opened its Steam store page. The PC title is planned for release this winter at 1,500 yen including tax. It is based on Ghost Mikawa's light novel Days with My Stepsister, and Mikawa is writing the scenario and supervising production. Players study or work while on a video call with a 3D-rendered Saki Ayase, who shifts gestures and expressions during small talk, and game-original stories unlock as accumulated work time grows. Yuki Nakashima, the character's voice actor in the TV anime, records Saki's full voice, and Mikawa wrote the lines. A co-sleeping mode sets a call where Saki, in pajamas, and the player drift off, with audio captured binaurally through a dummy head microphone. Minstrel, Tailpot's creative brand, handles planning, production and sales, and this is its first title.
- Additional DLC featuring Shiori Yomiuri: Tailpot plans a crowdfunding campaign on CAMPFIRE starting at 19:00 on October 27, with a planned 45-day window. The DLC would let players spend time with Shiori Yomiuri, a character from the original work.
- Productivity tools: Besides the Pomodoro timer, ToDo list and memo function, the game includes a notes feature and music file import with playlist customization.
- Music: Tracks include Lo-Fi music already published on the YouTube "Days with My Stepsister Channel," music from the TV anime version, and new music made for the game.
- Seasonal conversations: Apart from everyday small talk, Saki has conversations for seasonal events and special days such as birthdays.
- Binaural recording: The co-sleeping audio is captured with the dummy head microphone KU100, which Automaton notes is used for ASMR work. Automaton's headline calls it "sleep-over voice recorded with a high-end ASMR mic."
- Minstrel's stated aim: According to the official website, Tailpot is a creative enterprise that began as a group of three writers, and Minstrel is billed as a brand that creates immersion through acoustic technology and story.
- Source work background: Ghost Mikawa turned Days with My Stepsister into a light novel after videos were published on YouTube, and a TV anime aired in 2024. The press release says the series has surpassed 1.3 million copies in cumulative circulation.
Synthesized by Yomimono from the 2 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.