My mother's love song

"Rod, you have to remember that the more beautiful a woman is, the more likely she is to lie."
"It's all right, Mom. I like it that way."
"???"◇◇◇
After traveling to Type-Moon, he became Beast6, the beast of the apocalypse defined as the power to kill. Rod once believed that as long as he did not work hard and indulged in alcohol and sex, he could definitely avoid the ending of [Mankind's Evil Appears].
However, the situation eventually went beyond his imagination.
The female heroes around him were corrupted by him and turned into Alter.