I'm a Demon Lord. What's So Strange About Raising Snakes?

I had just transmigrated when my ancient bloodline turned the System into my underling!

It had been 100,000 years since my first disciple, whom I had trained, left the mountain!

I was getting bored being unable to go out.

Then one day, while I was fast asleep, a little snake climbed onto my shoulder and bit me.

And just like that, life finally stopped being dull!