So the name will not be much of a difference in my opinion as long as the channel produce nice content to its viewers, which is what I want to achieve. After that, they will surely memorize its name.
Sure, but if that name is shared with other things, then your SEO and Youtube and Google ranking will suffer.
Type "Raigeki" into youtube and what do you get? - countless videos! including other channels named the same. It's a
very bad name to use for that reason alone, I would strongly suggest that you pick something else, your channel
will suffer otherwise.
You might not have known that EEVblog was actually an acronym for, but at least it has the identifiable word "blog", and "EE" is obvious to anyone in the EE field. It's not great but it makes sense, and the best part is it's 100% unique, no one else uses that name. Type it into search and you get nothing but my videos or talk about my channel. I managed to get the EEVblog Twitter handle, the Facebook page, the Vimeo name, the Vidme name, the domain name, the gmail account name, and countless other branded accounts because it's 100% unique. That is a BIG deal if you are designing your channel for growth.
It's also fully trademarkable and enforceable as a unique brand, unlike for example Great Scott.
I only learned all that later, and I was lucky I had a unique name.