Speaking of the second affection bar, this is unlocked when you start a relationship, unlocking new options and interactions:
Mating scenes, setting up a sub-camp in your partner's hut, skill gems (bond), extra interactions, as well as being able to help your partner with their craft (in some cases).
Skill accessories.
Through skill stones, refined into bracelets and other accessories (future), we can carry the skills (gifts) that the tree gives us, which we can find and receive from our partners by reading a bond with them and going to the spirit well.
The artisan spirit is in charge of teaching us how to create various gadgets for exploration and other things.
Effectiveness (pikajota mushroom and derivatives)
Giving a mushroom as a gift may not make a good first impression, but if you have enough status, they may accept this gift and its variants may lead to certain events. Masturbation (spying): the spirit will use it to relax and stimulate their body. We can see them from a considerable distance (although if you have a relationship, they may invite you to a group masturbation session). First stage Estrus(caution): if you are too sincere and start giving these to spirits, you may force a scene with a low relationship, however, this may anger the spirit for a while. Second stage Estrus: if you have good chemistry, an accident may occur, but it will have no repercussions beyond a feeling of Shame.
You are not immune to consuming any derivative of the yellow mushroom; it will make your "friend" stand out, and spirits may notice it, causing them to move away, admire it, or help you in various ways to neutralize that effect.
If you are in a relationship, your partner may ask you for some food with that yellow seasoning.
Optional spirit fun (very optional) you can occasionally see spirits having fun, especially if you use a certain artifact with yellow essence. You can also ask your partners, but first you need to strengthen the bond between them and, obviously, allow them to do so (no ntr).
Hot joke (for this you need a censer (portable) and yellow essence). This can force a scene in an area with two spirits.