Well, devils of DXD have low fertility rates to begin with so I never understood why they bothered with contraceptives to begin with. Cream pies all around I say.
Love the choice of Lala. Even in her own series she often gets overlooked. Seriously, as much as I love Momo I never liked how she made a complete takeover of the series.
My name’s John Adler ‘The Texas Hammer!’ XD havent read even a little of this story but when I heard the name my mind immediately went to this.
https://m.youtube.com/watch?v=KIM2WKMUK8I
Isekai seikishi no monogatari is definitely what I would pick out of the options available. Never see any fics with it. Not a big fan of mech anime but this is the exception.