Vantaggi
Talented coworkers.
Management is English-speaking; good if your Japanese is lacking.
Svantaggi
The rest is all cons. They're bleeding talent like mad because they mistreat their employees, expect them to work unreasonable hours, and don't care about anything but lining their own pockets at the end of the day. I'm also pretty sure a lot of what they do is, if not downright illegal, then at the very least extremely shady. Falsely advertising your game as a Pokemon-like horror RPG/otome game/dating sim when it's your run-of-the-mill gacha game? Putting pornographic content into a T-rated game? Lying about the upcoming content of the game to pacify players who are thinking of quitting? We have to deal with a lot of hate from a playerbase that is understandably angry, and they don't care one bit. I started off with pride in what I did, and they successfully eroded that entirely. Don't work for these people unless conning unsuspecting players for a man who can't go two sentences without swearing is your idea of a good time.