Is there any anime like this?

- Isekai.

- Male MC, Female Love interest.

- Female Love Interest is Talented.

- MC tells techniques (like Shadow Clones, Binding Vows, etc) from anime, movies and TV shows to Female Love Interest and she Invents them for him.

I would prefer the main relationship to be the only one or the only plot relevant one. I would also like to know atleast 5 that fit these.