"Every time I have sex with the wives from my past life, I grow stronger along with my past life's memories.

'I'm first this time!'
'Master... you smell like another woman..'
'Honey!!'
'Darling'

To get stronger and regain the memories of my past life,
And to protect my beloved wives,

I must endlessly become stronger.

But I wonder if my back will break first... The future looks truly daunting."