Recommendations

Possessed had the best potential for the evil spirit drama, and they both share that same feel.
also they both have a female character that has "special powers" needed to fight the evil spirit

they both have that movie like quality, they both have Choi Byung Mo, and a dark vibe that walks on the gray line of what's good and what's bad

they are actually the polar opposite, but I started The Cursed because of Uhm Ji Won's acting in STTS, and her character here is like a combination of lee bom and bomi.
also, Choi Byung Mo guest roled in TC and he's character was slightly like STTS ;p

Loosely based prequel where our MLS first appear. Bai Fenjiu is the little niece of the Princess Bai Qian of the fox tribe. Little Jiu loves her Aunt QianQian and she often starts trouble because she likes to stick up for her loving aunt. Her auntie, though, is a powerhouse whom no one can really mess with, unless you’re Yehua, the great Crown Prince of the Heavenly Realm. Eternal Love deals with Bai Qian’s story of love with Yehua while Little Fengjiu is the secondary ML. Deeply romantic and wonderfully written.

Very good dramas. In both of them we have a lot of suspense, and we see the way and the sacrifice of the King Geunchogo and Queen Seon Deok to lead the country.

Both stories have female leads plagued by the ability to see ghosts and desperate to find a way to make it stop.

Both contain zany, light-hearted, humorous storylines that poke fun at the BL/shipping genre. WRU balances this with a more serious and traditional plot line, whereas TBT pretty much focuses entirely on humor and comedy.

These have both a similar feel to them. Both have strong dominating rich ML and sweet FL. They are both high school / college settings.

love - hate relationship between the 2 main characters but they both ended up falling in love with each other. the break ups happened to protect the female leads, but both ended u[ together in the end

Similar in terms of face blindness by a main lead which leads them unable to differentiates between two aspects of the same person. They (person with the face blindness) starts to love the second identity of the main lead. Also face blindness starts to get cured with their love for each other.

There’s an electric youthful energy that propels both films forward. Shizuka Ishibashi plays both main female lead consumed by doubt, anxiety and fear of the mundane lives for which to be hopeful. If only they knew how to take that terrifying first step towards one another.

They are same stories-both different versions.
Tragedy,romance and revenge!
Very twisted and heartbreaking!

A bit funnier, but with dark themes similar to Addicted Heroin (also Chinese cultural references). The weight of family is heavy...also have explicit content and themes.

Both I can hear your voice & Maybe, maybe not have a main character that can hear other people's thoughts

Junichi is a man who is unknown, he travels around and wherever he goes he happens to meet a girl and makes her happy intimately and makes her realise what is wrong with her life in some way and shows her, without words, how to be happier.
In RDWCS the story concentrates on the lives of five people who work together. As the story goes on they all discover what they are doing wrong in their lives and some even find unexpected love.

!!mature content!!

I would say Junichi is more of a Psychological drama, whereas RDWCS is a Comedy.