I made this 記事 because people are confused on what happened in the ending of 犬夜叉 (Final acts) so ill make it easy/simple to understand,

犬夜叉 and Kagomes ending
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犬夜叉 and Kagome live in a village now and they are married , Kagome is no longer able to pass through the well
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Miroku and Sangos Ending
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Miroku and sango have 3 children (2 twin girls and 1 son) and mirokus windtunnel is gone
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Kohakus and Rins ending
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Kohaku is alive without the sacred jewel shard,Rin now stays with Kaede
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Koga and Ayames ending
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Koga and Ayame lead both 狼, オオカミ tribes together and are married
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Sacred Jewel Shard
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The Sacred Jewel Shard was Destroyed by
Inu Yasha
Kagome
Sango
Miroku
and Sesshomaru
Kikyo kinda helped on how to destroy it(gave advice)
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and for the last part "People Who Died"
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Episode 1 final act Miroku killed "Hakudoshi"
Episode 2 Final act Naraku killed "Kagura"
Episode 8 Final act Naraku Killed "Kikyo"
Episode 11 Final act Naraku Killed "Kanna"
Episode Final Act 24 Team 犬夜叉 and Sesshomaru killed "Naraku"