After this explanation I stopped confusing シ and ツ
https://preview.redd.it/79y4rchy0nce1.jpg?width=220&format=pjpg&auto=webp&s=b838cd86b6b7205837a8b8508249ee136534e6b9 So I just imagine 2 lines getting pierced perpendicularly by the hiragana's equivalent's upper part. If you…