Doppelganger?

Looking for a show where you have :

- Parallel universe, where two worlds collide and meet their counterparts?  W was close enough when they have one of the characters share faces.

- Or maybe long lost twins or triplets, who meet.

Plus point if the storyline is great and of course, the acting is convincing enough to differentiate the characters

Parallel worlds / time travel:

• Train-must watch
• The King: eternal monarch - was disappointing
• Nine times travel - the older character meets /interacts with his younger one self
• Tomorrow with you - the two look alike talk on the phone
• Nobunaga concerto - the two meet and interact
• Alice - have not watchee this one

Cloning / AI:

• Duel - must watch
• Circle - must watch, the two dont meet
• Orphan black - if you havent watch the original canadian series, i suggest you wqtch that awesome one thus was 1 of a tenth of the original
• Yasha - dropped this one
• Orthos no inu - on my onhold list
• My holo love - startes promising but fell flat in the end
• Borg Mom - robot made by guy when his wife died

Doppleganger:

• Crowned Clown - must watch
• Bride of the century - very interesting
• Mask - very interesting
• Switch
• Nakark Kaew

Twins that meet later in life

• Ressurection - one dies and the other takes his place 
• The promise - a daily drama
• I have a lover - very makjang
• Sirius - a bit like Your Honor whete the two know and was raised together but as adults are living different lives
• W no Higeki - i actually liked this one
• Cinderella man 
• What star are you from