RTP stands for "Return to Player" and refers to the payout percentage of a game.
RTP indicates the average percentage of the wagered amount that a game returns to players.
The average RTP shown for a game relates to the game itself, not individual players. In other words, a game with an RTP of 96% does not guarantee that it will pay out 960 yen for every 1,000 yen bet.
RTP should be understood as an average calculated over millions of spins played by all players of the game.
For example, if X number of players each bet 1,000 yen, on average, 960 yen will be paid back to these players. The amount each player wins may be more or less than 960 yen, but the overall average will be 960 yen.
Please refer to the information within each game for the specific RTP percentage.