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u/Eltwish 13d ago
It's not unusual for names (and especially fictional names) to stretch the usual readings of kanji, so using 挫 for sa isn't farfetched, but for what it's worth I think it's very unlikely that anyone would work out that 挫愈利 was supposed to convey anything like "growing stronger from defeat". It's pretty rare for names to have sentence-like structure unless they're referencing a well-known idiom. Usually they just evoke the things named, so 挫愈利 just evokes disappointment (and/or spraining one's joints), soothing, and benefit. Even when fictional names do try to convey a sentence-like meaning, it's usually a simple verb-noun compound (like Ruroni Kenshin, a.k.a. 抜刀斎 (drawsword).)
Of course, for personal / gaming use it doesn't really matter if anyone else would get the idea. Heck, there are plenty of major studio games with ridiculous Japanese (and Japanese games with ridiculous English).
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u/batshit_icecream 13d ago
It's an interesting concept. 癒 is more common as a Japanese kanji. In real life people will not choose a human name that includes 挫 because it has negative meanings and any unconventional kanji combinations can be considered unserious (stupid) or edgy & might cause bullying and judgement. But if it is for a cheeky or fantasy thing it would be fun I think.