https://ja.polyglot.tools/t/script-display/katakana-shi
シ - shi (Katakana) | Japanese Script
Learn the Japanese Katakana character シ. Pronunciation: shi.
japanese scriptshikatakana
https://www.itspy.cz/en/thesis/ux-web-touch-component-for-self-learners-of-japanesekatakana-script/
UX: Web Touch Component for Self-Learners of Japanese Katakana Script | IT SPY
katakana scriptwebtouchcomponentself