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For OP, the red text seems to translate to 'night dew is deadly', or 'night dew death' according to two attempts with Google camera
The black text to the bottom right is 'go san', or 5, 3, according to my own limited knowledge lol!
I'll try and see if death links to any 4-digit numbers...?
EDIT: I've found an academic paper about Japanese number puns. Maybe this will have something useful:
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EDIT 2: I think it'll be something like a pun on the phrase 'night dew is deadly' etc. This table could help:
View attachment 3289302
Night dew seems to translate to 'yotsuyu', which separated into its syllables could be 'yo/4', 'tsu/2', and whatever yu would translate to. I could be translating it entirely incorrectly, of course - I think yotsuyu is a very specific word, similar to komorebi, but I'm not sure how exactly to translate the death part.
EDIT 3: Some further complexity;
"there are two separate words for numerals, with the native Japanese and Sino-Japanese words for 7 being nana and shichi, respectively. Different words are used for different contexts, and kango is normally used when you count in Japanese. Despite this, however, when Japanese people pronounce 7, nana is almost always used. The problem lies in the fact that Japanese people don't actually like the word shichi, as it sounds too similar to shi, the Sino-Japanese word for 4, which is
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(thus 4 similarly also uses the native Japanese yon in counting). Being a superstitious people, the Japanese really, really hate invoking death every time they count — and the fact that shichi sounds almost like the Sino-Japanese word for 1, ichi, doesn't help. "