Shop (ショップ)

The shop is where you can purchase various things using various forms of currency.

Purchasing Energy (エナジー)
Energy (エナジー) costs real money (and requires your Japanese account to be active).

Reloading Stamina (スタミナ)
Stamina (スタミナ) can be reloaded with energy. 1 Energy = 20 Stamina (usually 1 game). If you are out of Stamina while playing a game, a screen will pop up asking if you want to buy Stamina with Energy and you do not need to go to this screen.

Spirit Medal Store (スピストア)
The Spirit Store is where you can redeem items with Spirit Medals (スピメダル) like Player Contracts (契約書), Special Training Coaches (特訓コーチ), Breakthrough Coaches (限界突破コーチ).