Need help to find a story with growing dominant women

Story by H1AA1H

I'm searching for a story I read 1 year ago or so, but it seems it disappeared from the internet.

In that story a young man meets a woman during a trip (if I remember correctly they were on a train) and while they talk, the women on the wagon starts to grow muscular. Then he goes to the bathroom and when he exits the situation is worsening because the women start to become aggressive and dominant, but the woman he met at the start and became friend to starts to defend him (she is growing hugely muscular too).

If someone remember it and knows where to find it please tell me. :)

Thanx in advance