Who are Haru and Miyuki?

Who are Haru and Miyuki? in 1970, 50 years in the past (thousands of years in alternate world time), Miyuki and her brother Akiharu “Haru” Minase were transported to the alternate world. Miyuki became partner to Renamon, with the two becoming the best of friends.

in 1970, 50 years in the past (thousands of years in alternate world time), Miyuki and her brother Akiharu “Haru” Minase were transported to the alternate world. Miyuki became partner to Renamon, with the two becoming the best of friends.
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