So... what with this global lockdown, I have a LOT of free time on my hands, and no gaming systems because I'm poooooooor so I will probably be plugging away from fun Kanji mnemonics here and there for fun.
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Today's kanji character is for the word "Fault" and this is for the "On'yomi" reading, which is often used when part of compound words (ie, when not by itself).
失
For example of how this can be read, the word for "Loss" can be written as "遺失" which is read "いしつ" (or, "ishitsu") or as "喪失" which is read "そうしつ" (or, "soushitsu"). To clarify, "喪" or "sou" is the On reading for "mourning" and as mentioned, "失" means fault. We are at a "Loss" for something, and we are "Mourning" the situation because we know it was our "fault." We have compound words in English, so this shouldn't be too difficult to understand, there are just a lot of them, and they are tricky, especially with rendaku (alternate readings/spellings) but that's neither here nor there.
Now that I have laid down a hopefully helpful framework for understanding how kanji can work, let us move on to the point of this, which is learning a mnemonic for pronunciation by utilizing a ridiculous story.
The reading for "失" is obviously then read as "しつ" which is "Shi" and "tsu" respectively ("shitsu") so let us craft a story.
Think of your worst enemy or most hated person. Think about some of their many FAULTs. Out of all their FAULTs though, the worst one is that whenever they see someone out and about walking their pet SHI TSU (Shih Tzu) dog, they just have to run up and kick it. Their biggest FAULT is that they're a freaking psychopath that loves kicking dogs. What a terrible FAULT that is. Poor SHITSU.
Let the extreme emotion plant itself inside your consciousness, you will always remember the reading for FAULT because of the poor imaginary dog someone kicked (but don't let that dog get hurt by the kick, even imaginary dogs deserve better than that. This person's second FAULT is that they have stupid weak kicks because they suck. The SHITSU is ok and we're all smarter now for having lived through it. Except that dogkicker. Screw him or her.)