I might do this. With going with D. but using both A and B. It should start as a regular Kaiju story then slowly turn into a superhero tokuatsu that is kaiju series.

I like my character to slowly develop a relationship with Riho Futaba, but he ran into her before become a giantess(Not very long, just before her photo shoot that lead into the well known event).

I might come up with both original kaiju and Old kaiju for her and her human face encounter.

I keep thing straight, No gay or lesbian. It might get a little sensual or ecchi but not too extreme. Going on Anime logic with Kaiju film references. 

I like to have fun with this RP. Having comedy, action, romance, fantasy and adventure.

I will still keep it between Riho trying to living a normal life as a giantess and my character with her trying to adjust to their situations.