Bradley Manning was a U.S. Army soldier. He leaked a large amount of classified information to WikiLeaks. This act was seen as a major event in terms of government transparency and national security. Manning felt that the public had a right to know certain information that the government was keeping secret, but the U.S. government considered it a serious breach of security.
Well, 'A Christmas Story' features its own set of actors, and Bradley Cooper has no part in it. This movie has its own charm with different actors portraying the various characters related to the Christmas - themed story, but Cooper isn't among them.
To create a compelling Bradley in a crossover, you need to keep his core characteristics. His sense of duty and his military leadership skills should be emphasized. For example, if he crosses into a world of pirates, he could use his leadership to organize the pirates into a more efficient crew.
I'm not entirely sure specifically about 'fma visual novel' as there could be many visual novels with that name or abbreviation. It might be related to the 'Fullmetal Alchemist' (FMA) series, in which case it could be a visual novel that tells a story within that universe, perhaps exploring different storylines or character relationships from the original anime or manga.
I'm not sure specifically if there is a publicly available 'fma riza pregnant fanfic'. You could try searching on some fanfiction websites like Archive of Our Own or FanFiction.net.
The FMA manga ended with a powerful conclusion. All the loose ends were tied up, and the characters' journeys came to a meaningful conclusion. It left fans with a mix of emotions - happiness for the characters' growth and a bit of sadness to say goodbye.