Is Yotsuba&! good for beginners?
Yes!
At its core, Yotsuba&! is a great beginner series, suitable for many learners who've worked through a beginner textbook like Genki.
In the slice-of-life manga, the everyday life is depicted focusing on an energetic 5-year-old girl named Yotsuba&!.
There are her daily experiences that are never extraordinary, from which she find joy and pleasure.
The main character is that child, but everyone at any age can enjoy the story.
This manga is recommended especially for beginners!
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