Oberon is likely a character from the fairy realm. In this fanfiction, he is Harry Potter's mate. He might be based on the traditional Oberon from fairy lore, a powerful and somewhat mischievous fairy king who now forms a special relationship with Harry.
FGO isn't a typical visual novel. It has more gameplay mechanics and character-building features. The story is presented along with battles and strategic decisions.
There could be a fanfiction where Oberon and Trinity team up for a mission on a desolate planet. Maybe they have to face a new and powerful enemy faction. Oberon's nature - based powers and Trinity's healing and energy - based abilities would make for an interesting combination. They could start off as just comrades in arms, but as the story progresses, a deeper bond of friendship might develop between them.
There might be many interpretations of 'Oberon Day'. If Oberon is from a certain mythology, perhaps it's a day dedicated to the character Oberon. Maybe it involves rituals, feasts, or special events related to the mythology he is part of. But again, this is all speculation without more context.
Some of the memorable characters in Oberon novels could be the brave protagonist, often on a quest to save their world or discover a great truth. There might also be the wise old mentor figure who guides the protagonist with their knowledge and experience. And don't forget the villain, whose evil plans drive much of the conflict in the story.
There were the following FGO-related novels:
"FGO's Journey to the Other World,""Lu Mingfei Challenging FGO,""Starting from the Collapse of the World with the Card Drawing System,""Running FGO in the Ninja World,""King Arthur's Comic Journey,""Yuki's Holy Grail Journey,""The Story of Chaldeans Landing and Becoming the Director,""Saving the World from the Collapse," and "Chaldeans in Marvel." These are the different types of novels about FGO. There might be games-game systems, light novels-derivative doujinshi, funny jokes, infinite universe-infinite, and so on. I hope you like this fairy's recommendation. Muah ~😗
I'm not sure what 'First Lady' refers to because the name could refer to different people or characters. Can you provide more context? This way, I can better answer your questions.
If Oberon Day has a story associated with it, the key elements might include the origin of the day. For example, if it's based on a legend, the events in the legend that led to the creation of Oberon Day would be key. Also, any symbols or traditions associated with the day could be important elements. But without more details, it's hard to be certain.