How does the battle system work in 'battle visual novel'?

Take 'Persona' as an example. The battle system in this 'battle visual novel' combines turn - based combat with the use of Personas, which are manifestations of the characters' inner selves. You can summon your Persona to attack enemies, use various skills, and also take advantage of elemental weaknesses. There are also elements of teamwork, as you can have multiple characters in your party. During battles, you need to manage your resources like HP (health points) and SP (skill points), and make strategic decisions such as when to attack, when to defend, and when to use special abilities. The battles are not just about defeating enemies but also about leveling up your characters and strengthening their Personas, which in turn is important for progressing through the story.

For games such as 'Fate/stay night', the battle system involves strategic use of different skills and abilities of the characters. You have to plan your moves based on the enemy's actions and your character's strengths. There are also magical elements and special attacks that you can use during battles. The battles are often part of a larger narrative, and the outcomes can affect the story progression. Each character has their own unique abilities and growth potential, so you need to consider all these factors when engaging in battles. Additionally, in some cases, the relationships between characters can also influence the battle outcomes, for example, if there are support abilities or combined attacks.