¡Kawashima Ryuta Kyoju No Mainichi Tanoshimu Otona No Drill No Wo Kitaeru "Keisan" 60 Nichi 4
¡Kawashima Ryuta / Cho
 Description
[Machine Translation] Addition and subtraction of three numbers. By solving simple math problems as much as possible, you will keep your brain active.
凌 Credits
Ryuta Kawashima
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