He's kind of cute but I'm not overly fond of him...
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"People try and create things to stop time so that they- who aren't eternal~ can believe in eternity. If you believe in it.... eternity is real."
Well naraku doesn't. Inuyasha isn't too fond of him a lot of the time...oh! You meant me? He has his moments but generally doesn't do much - I can take him or leave him.
he seems to have grown up quite a bit during the series, at least he doesn't cry as much and he can retain his "balloon" shape for much longer periods to escape