A Hypothetical Game: Mixed Emotions in WWII

The illustrations depict a game in which you play a WWII soldier. In the first scene, you, the player, would probably feel annoyed at your fellow soldier, an NPC named Conrad, because the sexy and spunky girl he's flirting with turned you down in favor of him.

Then, in a battle, Conrad bravely defends you when you get injured.

How are you going to feel toward this NPC? You'd most likely feel a variety of things. This is another example of Player Toward NPC Relationship Deepening, and it is just one of many Emotioneering techniques yet to find its way into many games.