They often interact as teacher and student. Luna, with her vast knowledge of the old magic, can teach Twilight things that are not found in modern magic books. For example, Luna might show Twilight how to communicate with the spirits of the night.
Well, the story behind the 'Twilight Music' in 'Twilight Princess' could be tied to the game's plot and the world of twilight. Maybe it plays a role in revealing secrets or triggering certain events.
In general, the Twilight Princess manga is regarded as canon. It adheres closely to the key elements and plotlines set in the original franchise. Minor deviations might exist for artistic or narrative purposes, but the core remains consistent.
Their relationship could develop through shared goals. For example, if there is a magical imbalance in Equestria that only their combined magic can fix. As they work towards this goal, they start to understand each other better.
There's a fanfiction called 'Twilight's New Magic'. In this story, Twilight discovers a whole new type of magic that she has to learn to control. It's full of adventure and has some really interesting character interactions. It shows how Twilight overcomes challenges and becomes even stronger in her magical abilities.
Twilight Sparkle and Princess Luna often have interesting interactions in fanfiction. Fanfic writers might explore their relationship in different ways. For example, some might focus on their friendship, showing how they support each other in ruling Equestria or in magical studies. Others could create adventures where they team up against a common foe. There are also stories that delve into their individual growth and how they influence each other's development.