If you're actively pursuing a religious faith, it's best to be well informed on many than to be seduced by one or a few. Getting wrapped up in the beliefs of one religious group is an easy way to get caught up in a cult Scientology!
There's absolutely nothing wrong with exploring other faiths, philosophies or what have you. I don't subscribe to any organized religion as a result, because having a open view about all of them led me to a particular point where I realized that none of them had anything to offer to me. Well, anything to the point where I'd think about enlisting as a member.
Even if leads you to being agnostic, atheist or not, having an open view about other religions other than the one you're raised on does worlds for tolerance and acceptance. I'd take one well-informed Muslim over a hardcore Baptist who thinks all non-Baptists are heathens that will burn in the fiery depths of hell, completely ignorant of other people's beliefs.
That's why I said Himuro should explore all religions, philosophies and beliefs - not to find out which one is right, but which one is right for him. You saying that your way is the only way, and all organized religion is dumb hocus pocus is no better than what he might hear from a hardcore member of the cloth.
Let him find his own way.