Responses
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The text on the cover and on the webpage of be boy gold translates as "a new chapter of finder starts" and "are Asami and Akihito still unconscious?".
From that I would judge - and hope - that it is indeed not an extra/bonus, but the beginning of the new chapter, but I guess we can only tell once we see the pages
Next Be Boy Gold magazine has Asami on it.
Text on the webpage says "Ayano Yamane's finder series is starting a new chapter!"