I raised $500,000 at 21 by selling a share of my future earnings. It's how I solved having great ideas but no capital.

Kirill Avery is the CEO and founder of Alien.

Courtesy of Kirill Avery

• Kirill Avery sold a percentage of his future earnings to fund startups like Alien and Human.
• He used a SAFE agreement to raise $500,000, giving investors exposure to all his ventures.
• Avery said the unconventional setup has given the freedom to try out different ideas.

This as-told-to essay is based on a conversation with Kirill Avery, 24, a founder and CEO. Business Insider has verified his claims.