Recommendations

Highly intelligent man who is extremely disciplined and unapproachable meets a girl who's his complete opposite. She is far from the brightest bulb---actually she's a broken bulb, highly emotional, but sweet and endearing. His IQ is genius level and he is able to memorize things on site. Lead female can't even speak Thai properly.

Much like in Itazura na Kiss the female character seems to embroil the lead male into a series of unfortunate events. All of which he needs to bail both of them out of. Perfect example---they need fresh water-- he ends up creating it out of salt water is similar to when Kotoko burnt the food and Naoki had to make dinner.

If you look at the picture; they made sure the image was reminiscent of ALL the Itazura na Kiss live-action posters ---Toey fits in perfectly, in physical features (if you look at the pic), with majority of the other girls who have revised the role of Kotoko Aihara.

All My Favorites listed in Order:
*Ariel Lin (Personal Fave-Everyone after copied her performance)
*Manaying Sushar (Brilliance--Just Wow!) <-Biggest Resemblance
<------ Toey is now here!
*Reina Visa
*Chuo Genie
*Miki Honoka
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**I don't like the Kdrama version so it's not included in anything.

Thai Version - Kiss Me
Original Japanese version - Itazura na Kiss
Taiwanese - It Started With a Kiss (personal best)
Japanese Jdoramas - Itazura na Kiss - extended name (ex. Love in Tokyo
Japanese Movie - Mischievous Kiss
China - Say that You Love Me
etc...over and over and over remake.

Both dramas center around brilliant strategists who use their tactical skills to navigate the political game. The poster image of Si Ma Yi walking the tightrope above the upturned swords is a testament for both dramas. Both have excellent cast members including actress Liu Tao (Ode to Joy's Andy) who actually has main parts in both dramas!

Well, because of the subject of trot music in both of dramas. Joy is known that she sings trot music.

to be honest the humor is very similar, it makes you laugh and it has the hints of BL in it you know though more of them are bromance because the romantic relationship isn't admitted and only used to make us curious for what's next

Both dramas are set in the same time period and with a lot of the same actors. Barbara is an amazing lead actress in both and she just brings this sassy aura to her characters that make both dramas so interesting.

They gave me similar feelings. Although Mondai no.. is a lot more in depth with issues around social construct, they're both about women that aren't afraid to stand for their beliefs and move on with their lives.

The Story is quite similar, she causes his fiance's death, he wants to get revenge, he tries destroying her life, fell in love with her at the end.

Both are revenge themed dramas, Physical abuse, falling in love to the lady and struggling between revenge and love

If you like drama Signal, there's a huge probability that you will love drama this drama! :D

if you like drama Signal, there's a huge probability that you will love drama Tunnel.

From the same PD and writer. It also discusses similar topic such as social hierarchy and reform.

i talk about school,romance,and handsome boys.It really talk about life and how it goes through and why.

I've been jumping around (skipping scenes in) Princess Agents a lot so sorry if this is completely a completely off recommendation..
but some of the character personalities are very similar.

XE is like QingSuo- others controlling their life, losing memory of their past, stuck in love triangle, stuck with someone who they kinda hate but end up loving

Yu WenYue similar to Yu WenYong (yeah even their names are similar)- royalty, cold on the outside and warm on the inside, always mistaken by their love

Both don't have chaebols, both have mukbang and most importantly characters you can relate to.

Both dramas are of supernatural genre, connecting two time -present and past - to solve cases, revealing missing connections between different ppl. Both dramas have badass female leads. Worth watching. Fighting.