He found the answer easily. All these years, ever since he got the Shigan, Toru had been using it over and over again, every time he fought with someone. In every conflict, even when he was training. Moreover, Toru increased the use of Shigan after he got Yamato's cells, because, thanks to these cells he has a large reserve of chakra, so he could use Shigan for a long time without getting exhausted... that was the answer. Using Shigan had a consequence that Toru was unaware of until this moment. It's similar to what happens with Itachi's Mangekyo Sharingan....
![](//book-pic.webnovel.com/bookcover/23069263205881305?imageMogr2/thumbnail/180x&imageId=1711843077174)
The Last Rising Sun (Assassin)
Anime & Comics · NotPolarArtic
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