“Excuse / Dismissal” in Japanese is 免, read men, manuka, manuga (めん, まぬか, まぬが). It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 免許 (license).
What does 免 mean?
Same sound, different character — the classic trap. Compare them side by side: