that's why I said it's right beside you but you won't see it until you realize it. Also the riddle was a pun using both concepts of outer "space" and common "space" well your turn
Hi Esan
Could you check this one? 少女性活記録チグサちゃん
Somehow there is another game in the archive. And maybe you'd be able to share a newer version
Thank you for your work!