Disclaimer: I don't own InuYasha, and I'm happy I don't. The creators are very talented. I would just hold them back.
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"SO wait, your saying that he's completely stuck like that?" Kagome asked her grand father rather hysterically. "He is, I told you not to mess with the Sacred Jewel, but nooo, you needed it to fight Naraku. I told you it could have some strange side effects." Her grand father replied. " But that!" " I told you, just about anything could happen." Kagome walked out of the house where here friend were waiting on the patio. "So is he stuck like that?" Sango asked rather curiously. "My grandpa said he is" Kagome replied. "What do you think we should do? I mean, it's going to be a lot harder to fight demons, if he's stuck like that." Miroku added. "I'm not sure, I think we should get some rest, and I kind of like him like that, he sleeps so peacefully, and he's kinda cute like that." Kagome. " Yeah I think so to, but it just doesn't seem like it's him anymore, he's so quiet, I don't even think I've heard him say a word since he changed." Sango replied. "Oh well, I guess we'll just have to wait a few days and see what happens." Said Kagome.
(a/n) Okay, obviously I was very vague on what happened. To put it short, our favorite little group had collected a large amount of the Sacred Jewel, and had a climactic battle with Naraku, where InuYasha used the shards to power himself up, and experienced one of the "side effects" where he was changed back into a little kid again, except he still thought like his regular self (not acted though and no one knew this either).