透 (Kanji for transparent)

Onyomi

TOU

The excellent ninja moves on transparent TOES , so he is always unseen.

( が ) す＊ける

to ｂｅ　ｓｅｅ－ｔｈｒｏｕｇｈ，(as in, a see-through blouse, or seeing a guy's scalp through his thinning hair) ｕｓｕｓａｌｌｙ　ｐｈｒａｓｅｄ　ｌｉｋｅ　ｔｈｉｓ：　ＸＸＸ　が　透けて見える。
★☆☆☆☆

透明(とうめい) な

transparent ★★☆☆☆
透 (transparent) + 明 (bright) = 透明 (transparent)

transparent (like water or glass)(BOOBOO: not to be confused with 'invisible', which is 目で見えない　（めでみえない））

浸透(しんとう) する

permeate ☆☆☆☆☆
浸 (immerse) + 透 (transparent) = 浸透 (permeate)

to permeate (like mud permeating a towel); to stealthily take over (communism) ;　osmosis