Keep it simple. What did you think of your chapter. Or it can be something like... next week is gonna be intense.
I also noted that your hashtags need a revamp.
I wouldn't add the hashtags of the genres you already have. Instead I would use hashtags of genres you weren't able to add as your main 3.
I would also add the hashtag #witches or other fantasy elements you might have maybe #history for world war 1.
You do mention witches in the summary but the hashtag is for people who might skip that and go "yolo, lets see what themes it is about". Hashtags are like a second summary of single words if you want to see it that way. Maybe hashtags similar to #timetravel or #reincarnation could help you as examples of what hashtags to use.
To further help you: in my stories I will use #villainess #genderswap #fairy #pirates #cyberpunk #strongfemalemc stuff like that. Point is use things that describe your novel. It can be historic events, description of characters, or genres you couldn't add in the main 3 category. Just think which 10 keywords would best sell my novel to a manhwa loving public.
Also think which 10 keywords would best attract your target audience. You have a great product it is a matter of knowing how to sell it.