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.
One possible plot could be that Riza discovers she's pregnant during a time of relative peace in Amestris. She then has to deal with the reactions of her comrades, especially Roy Mustang, who might be both overjoyed and worried about the implications for their future.
One possible scenario in a Naruto and Riza Hawkeye fanfiction could be a dimension - hopping adventure. Naruto, with his boundless energy and ninja skills, could end up in the world of Fullmetal Alchemist where Riza Hawkeye resides. Riza, being the skilled sharpshooter she is, might initially be suspicious of Naruto. But as they face common enemies, perhaps some alchemist - turned - villains who are after a powerful chakra - based artifact, they start to work together. Naruto's Rasengan and Riza's precise shooting could make for some amazing battle scenes.
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.
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.
I have no definite idea. October 3 for the FMA manga might be the date of a significant battle, a character's transformation, or the introduction of a crucial element. Without further information, it's tough to pin down its significance precisely.
The FMA manga ended on a high note. The final chapters wrapped up the storylines neatly, and the characters' development reached a logical and emotionally resonant conclusion. It was a well-structured and memorable ending.
A fanfiction could also focus on a training arc. Naruto could train Riza in chakra control, which she could then use to enhance her shooting accuracy even further. In return, Riza could train Naruto in marksmanship, which could be a useful skill for him in certain situations. This could lead to a friendly competition between them, with both of them constantly trying to outdo each other in their respective skills while also growing as individuals and friends.