This site is also an interactive game — walk around it, meet the creatures → This site is also a playable game → Play it
Illustrated 3D Yoonki greeting, before his story builds around him

04 · THE GIST

GTM & product at Google by day. Builder of small, playful things by night.

SEE WHAT I’VE BUILT

WorkTen years, three logos

NAVER 2014

Where it all started — joined through NAVER’s global business track, back when LINE was still part of NAVER.

LINE, Seoul 2014–2018

Growth PM. Helped grow new products from zero to tens of millions of users across Southeast Asia — and stayed through the biggest tech IPO of 2016.

Google, Seoul → San Francisco 2018–now

GTM & product at Google Play. I PM a content-forward store experience and take it to market — both sides of the table. Lately it’s been all about AI: LLM-based systems before it was cool, agentic tools teams actually use, and figuring out what AI-native apps mean for a platform.

AboutAfter hours

The part of me that doesn’t fit in a job title builds things. I ship AI apps, arcade games, and AI-produced music — everything in the projects list below is something I actually made and put into the world. When I’m not building, I’m reading about AI, making songs, teaching vibe-coding to Korean seniors in the Bay Area, or playing video games for “research”.

ProductsPick a card

Every card is real & live · hover to pull · click for the story · or just keep scrolling