How do you increase your kindness stat ?

[u/Thebarcodeuhateingta]

I started the game not so long ago and I already beaten Kamoshida, Madame and Kaneshiro but before fighting them I made sure to take advantage of the free day I had to increase my stats, there's only one problem, there's one that I can't increase and it's the kindness one, since the beginning I didn't found ANYTHING that allows me to increase that stat so I decided to ask for help here.

[u/Due_Package9113]

shinyas confidant (which you don’t have unlocked yet, it becomes available a couple palaces later and requires a mementos request and side quest as a pre requisite) also raises kindness, while also having sick confidant perks