great-blaster:

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The sextuplets are born in May 24, year unknown, but currently in their 20s.

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The current date of the “Osomatsu-san” anime takes place in Heisei, which is the Japanese term for any year between 1989 to current.

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Their residence is in the Akatsuka district in Tokyo.

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Jyushimatsu’s previous student/work experience involved “Guarding the house. That’s it.”