The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
No premiere date exists, so this pins the announcement, which Anime News Network[2] and Wikipedia[3] date to the Dengeki Bunko event on July 16, 2023.
Anime News Network reports the second season was green-lit at the Dengeki Bunko 30th anniversary livestream on Sunday, July 16, 2023.
Wikipedia records the second season's announcement at the Dengeki Bunko 30th anniversary event on July 16, 2023.
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