User blog:MissCaiCai/The unforgivable sin

I was questioning this ever since Emerald Secrets ended but flashbacks appear at Starlight. The reason why people hate Ein is due to him ruining the Aarmau ship by taking Aphmau away from Aaron and never letting her go. Yes, Aarmau is a really powerful ship but does this mean a character (like Ein) ruining the ship for their own yandere purposes is considered an unforgivable sin?