Most confusing comment I had

https://preview.redd.it/u1faaaac8rff1.png?width=764&format=png&auto=webp&s=014090e61af3f8d7e57803ef3977ee78b5c3643d

So I got this comment today, and at first I was happy. I though finally I got a new, real reader who appreciate my work. However...I don't write action story. I don't have a character named Ty, nor do I know what Null is. This is the first time I got this kind of comment, and I'm confused and a bit disappointed, ngl. Should I just delete this comment or say they've commented on the wrong story? Is this a bot or a real person to begin with? Do writers get that kind of comment often? Thanks