Fuga: Melodies of Steel

There are three main ways to increase affinity:
- The most straightforward way is having two characters talk to each other during an intermission. Every third time you talk with a character you will get multiple choice question. Choose the best answer to gain a large boost towards affinity. Talking to a character to cure the Depression debuff also nets you a bonus.
- Once or twice a chapter you can have two characters do laundry together, and this will give a large bonus to affinity
- The final way two characters can slowly gain affinity is being paired up in battle. It may not seem like that putting two characters at level 1 does much but you may find out they have reached level 2 or higher while battling!