They all know each other irl. Doha already like Bada. But maybe Doha sick, so created and uploaded himself in a game. When he died or his body is beyond function, he then invited them all to connect to his virtual world "Come spend time with me as last farewell." But the group didn't know they'd fall into the program. Irl maybe Doha rich and have personnel attend to keep the group's bodies alive. That way Doha can continue his time with Bada.
Plot twist. What if to unlock the true ending, Bada had chose to stay with Doha. After a period of their mutual bliss, Doha could grant their freedom. Maybe his last wish was to feel that peaceful assurance from Bada.
They all know each other irl. Doha already like Bada. But maybe Doha sick, so created and uploaded himself in a game. When he died or his body is beyond function, he then invited them all to connect to his virtual world "Come spend time with me as last farewell." But the group didn't know they'd fall into the program. Irl maybe Doha rich and have personnel attend to keep the group's bodies alive. That way Doha can continue his time with Bada.