Localizing Spacious

I am using Spacious (thank you for making it! It’s nice!) in Japan and would like to localize the strings to Japanese. I found some strings in the Edit Theme scripts, such as search box, results not found, etc. But I can’t find them all. Specifically the “Read More” button on post excerpts, as well as “No Comments” etc. Where can I find all the English strings in the Theme. Thank you.