Planescape: Torment is the spiritual precursor to Disco Elysium and is very good. It has more combat than Disco Elysium, but most forced encounters can be avoided through dialogue. I highly recommend it - play with high Wisdom and talk to everything like it was Disco Elysium. You can drop the difficulty of the combat using a slider in the settings as well. It's a little more serious than Disco, but that's really to be expected, and there is a lot of good humor and heartbreak in it.
Please be careful with the tuna. Tuna has a lot of mercury and cats are smaller than humans so it can really fuck them up.