Isekai Heroines Are Love Rivals!

"I won't give up the heroine's role!" Just as I was about to confess to my childhood friend whom I've always loved, at that very moment... We were enveloped in a dazzling light and transported to another world. To escape this strange world quickly and be with him forever, I need to gather "Eight Heroines" and defeat the Demon King... What? One after another, troublesome love rivals appear, interfering with the protagonist's path to love! To the right is the Demon King, to the left are love rivals, enemies everywhere! The only thing I can rely on is... That's right, my own strength! The [Violent Romantic Comedy] of isekai heroines begins!