Using Gacha to Increase My Companions and to Create the Strongest Girls' Army Corps

Using Gacha to Increase My Companions and to Create the Strongest Girls' Army Corps summary:

Social game had became the hot topic in public now. There was one man who was addicted to it. For some reason, he was invited to another world after he rolled the gacha like he usually does. The gacha from the social game is available in his trusted smartphone. It was a convenient and cheat tool that can give out equipment and beautiful girl characters. He now aims to create the world’s strongest army of beautiful girls in another world.