Yaguchi has finally turned 18! Yay!
I'm finally an adult!
It's about time that I'm in the older sister team for Morning Musume,
but I'm so small and talk a lot
so there seems to be the misconception that I'm very childish.
But actually, I'm really thinking about a lot of things
and putting a lot of effort to change myself all the time.
I often hear, "You never get nervous, do you, Yaguchi?"
But right before something, I can't stop trembling.
I'm a kind of person who hides their nervousness.

Now, that kind of 18-year old Yaguchi's mission for the 21st century is
to [bad word] a y girl unequal to any!
When I say "y," I don't mean a hot, "nice body!" type
... Well, that's nice too, but...
Ah, no, I mean that I simply want to [bad word] a more mature, wonderful, stronger woman.

In terms of outward appearance, I'm thinking about growing out my hair
and appear a bit older.
Next year, I'll [bad word] an adult with a deeper sense of responsibility.
This is it! This is what Yaguchi is aiming for.

Well, everyone.
I believe you'll be able to meet a different Yaguchi in the 21st century
so please look forward to it!
This was Mari Yaguchi!
This is farewell! Doro~n!

I guess because I say things like that I seem childish...