Sukuna does die in the manga. The way it happens is quite dramatic and ties in with many other elements of the story, adding depth and tension to the overall narrative.
One benefit is that it makes the animals happy. Happy animals are more likely to be friendly towards us. For example, a well - treated dog will wag its tail and be excited to see you.
No. Ryomen Sukuna is a fictional character from Japanese mythology and modern manga/anime. He doesn't have a basis in a true historical event or person.
Nope. Ryomen Sukuna has no basis in reality. It's a product of the creative minds of the writers and illustrators who designed a captivating fictional character for the enjoyment of the audience.
Being nice to friends can lead to more enjoyable social experiences. If you are kind and positive in your interactions, your time together will be more fun. Also, it can expand your social circle. When your friends see how nice you are, they are more likely to introduce you to their other friends. Moreover, being nice to friends helps in reducing stress. A harmonious friendship where everyone is nice to each other is a source of comfort and relaxation, rather than a source of worry or conflict.
In the manga, Sukuna doesn't possess all 20 fingers. There are specific story arcs and events where his finger count changes based on the plot developments.