It could represent different things depending on the context. Maybe it refers to specific periods or moments in history, or it could symbolize the passage of time in a more abstract sense.
The first time someone performs on stage can be a nerve - wracking but also a very fulfilling experience. They might have butterflies in their stomach before going on, but once they start, they feel the energy of the audience and the joy of expressing themselves through art.
One possible theme could be adventure. Since it's about a time agency, there would likely be exciting travels through different times. Another might be the consequences of meddling with time.
I'm not really sure specifically what 'the time agency time stories' are. It could be a collection of tales related to a time - traveling agency perhaps? Maybe it involves different adventures in various time periods that the agency's agents experience.
The best time to show a card in time stories varies. You might want to do it when it aligns with a strategic move or when it can surprise your opponents. It also depends on how the story is unfolding and what advantage you hope to gain from it.
There could be many. Maybe stories about time travel adventures where characters visit different eras. For example, they might go to the Victorian era and experience the lifestyle there.
I'm not sure specifically what's in 'rays first time stories' as it could be about various things. It might be about Ray's first experiences in life, like his first day at school, his first trip, or his first encounter with a particular hobby.