User blog comment:AikawaAyumu/After GREMLIN storyline is over.../@comment-121.54.92.139-20130911030211

I was thinking on the lines of The Divine Comedy, and/or Touma able to use the IB's inner dragon to use (without cutting his arm).

Or he gets a replacement arm(Cyborg-ish) so that he can use magic, at the same time remove it to use the IB dragon