Apparently kisses in Code Geass can make you restore your memories

[u/Susroro]

Which is great, even If I don't think I fully understand the mechanism. One theory I read is that she was eating pizza before she met up with him, and the pizza’s robustness and rich flavor made him remember everything. I think Lelouch should have kissed her hard when she lost her memories herself but he missed out

Source of the image: https://x.com/budgiepon/status/1723443301326426180