“Tender / Weakness / Gentleness / Softness” in Japanese is 柔, read juu, nyuu, yawa (じゅう, にゅう, やわ). 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 柔道 (judo).
What does 柔 mean?
Same sound, different character — the classic trap. Compare them side by side: