Novels whether translated, english originals, or fanfic which involve the MC summoning characters from different movies, possibly making them love interests. Like Shoujo Grand Summoning and glitched isekai.
Try the very same author's other work Illimitable Until Death. I believe this is his(?) third work iirc, with Shoujo Grand Summoning as his(?) second work.
Shoujo Grand Summoning seemed okay suprisingly, though I didn't manage to read far and we all know that downhill that awaits webnovels at chapter 100. I'm down with this idea except for making them love interests, some average Joe shouldn't be collecting harem of powerful women just coz he got authors deux ex power. Most of this characters aren't even close to being smart, charasmatic, strong, dependable or hell even likeable to be deserving of these women they usually get. https://www.fanfiction.net/s/11573183/1/Adorable-Murderbeasts-A-Self-Insert This is kind of what you asked for.