I tried using Wacom's pen tablet "Wacom Intuos" for entry of Wacom which can be purchased from about 10,000 yen which is perfect for introducing Digi picture - GIGAZINE
Wacom Intuos: Creative Pen Tablet
Silicone Holder For Wacom- Ctl472 Ctl672 Tablet Pen Holder Silicone Grip Holder | Fruugo NO
Wacom 4K Pen for Intuos Tablet Black (LP1100K) - Walmart.com
Wacom 4K Pen for Intuos – GrandHub Technologies Ltd