Question: Who directed a movie that shared and actress with the breakup guru and was released in 2015?
Context: Samidha Guru (Marathi: समिधा गुरू ) (born 6 August 1980) is a Marathi theatre, film and television actress from Nagpur, India.  She has received Maharashtra State's Best Actress Award for the Movie "Kapuskondyachi Goshta]".2014 She also received MMW Gaurav Awards for Best Actress for the play "Get Well Soon".  Having a family background of dance, writing and acting, Guru made her acting debut on television through "Soniyacha Umbara" but she got noticed in "Avaghachi Sansar", in which she played an angry young woman.  After this, she did prominent roles in many popular serials which include "Jivalaga, Zunj, Ya Valanavar, Devyani, Gandha Fulancha Gela Sangun, Tuz Vin Sakhya Re, Kamala, Tujvin Sakhya Re".  Samidha has also acted in many stage plays at Nagpur in some of the plays she got silver medal for her performances.  On the big screen, Guru has also done prominent roles in "Kaydyaach Bola, Majha Mee, Dhating Dhingana ,Panhala and Tukaram" wherein her acting was appreciated. Guru (literally: "The Teacher / Spiritual Guide") is a 1997 Indian Malayalam-language fantasy film directed by Rajiv Anchal and written by C. G. Rajendra Babu from a story by Anchal.  Mohanlal played the lead role in the film, while Nedumudi Venu, Srinivasan, Suresh Gopi, Sithara, Kaveri Muralidharan and Sreelakshmi appeared in supporting roles.  A highly metaphorical movie with multiple layers of meaning, Guru himself can be regarded as a symbol of the manifestation of the supreme liberating knowledge.  The movie makes a strong statement on various extreme divisions in the society (religious, political, so on), and the resulting conflicts and violence; evils which lie deep within one's own mind and reflected in the world.  The movie portraits this human predicament as a result of the ignorance into the true nature of things. The Witness () is a 2015 suspense crime drama film directed by Ahn Sang-hoon, starring Yang Mi and Lu Han.  The film is a remake of the 2011 South Korean film "Blind", also by the same director.  It was released in China on October 30, 2015. Jaal (Hindi: जाल , translation: "Net"/"Trap") is a 1952 Bollywood film starring Dev Anand and Geeta Bali, and directed by Guru Dutt.  This was Guru Dutt's second movie, after Dev Anand's production "Baazi" Guru Dutt was trying to find his bearings through commercially successful movies.  After "Baazi", this was the second film in which Dev Anand also came through as an actor with a unique style of his own. The Breakup Guru (Chinese: 分手大师) is a 2014 Chinese romantic-comedy-drama film directed by Deng Chao and Yu Baimei and also starring Deng Chao and Yang Mi.  The film was released on June 27, 2014. Guru Sishyan (English: Teacher, Student ) is a Tamil language film released in 2010.  It stars Sathyaraj and Sundar C in the lead roles.  It is directed by Sakthi Chidambaram. This movie was dubbed in Telugu as Guru Sishyulu.  The title was taken from Guru Sishyan (1988 film) cast Rajinikanth Mouna Guru (English: The Silent Teacher ) is a 2011 Tamil action thriller film directed by Santha Kumar and produced by M. K. Thamizharasu.  The film featured Arulnidhi and Iniya in the lead roles, with John Vijay and Uma Riyaz Khan in supporting roles.  "Mouna guru" illustrates a misunderstood college youth becomes unwittingly involved in a crime plot that spirals his life out of order.  The film, which has music composed by S. Thaman, released on 16 December 2011 to highly positive reviews, subsequently becoming a sleeper hit.  The film was remade in Kannada as "Guru" (2012) and in Telugu as "Shankara" (2015).  The movie was remade by AR Murugadoss in Hindi as Akira. Yang Mi (born 12 September 1986) is a Chinese actress and singer.  She made her acting debut in historical television series "Tang Ming Huang", and later received recognition for her leading roles in various television series "Chinese Paladin 3" (2009), "Palace" (2011), "Swords of Legends" (2014), "The Interpreter" (2016) and "Eternal Love" (2017); as well as films "Mysterious Island" (2011), "Tiny Times" (2013–2015), "The Breakup Guru" (2014) and "The Witness" (2015).  In 2017, she won the Best Actress award at the WorldFest Houston International Festival for her performance in "" (2017).  Yang was chosen by "Southern Metropolis Daily" as one of the New Four Dan Actresses. Guru Dutt Movies Pvt. Ltd. (GDMPL) (Guru Dutt Films Pvt. Ltd.) is an Indian movie production company, started by actor-director Guru Dutt, and now run by his son, 'Arun Dutt', who wrote and directed film "Khule Aam" (1992). Deng Chao (; born 8 February 1979 in Nanchang, Jiangxi) is a Chinese actor, comedian, director and singer.  He is a cast member of the popular variety program, "Keep Running".  His recent films, "The Breakup Guru" (2014), "The Mermaid" (2016) and "Duckweed" (2017) are among the highest-grossing Chinese film of all time in China.
Answer: Ahn Sang-hoon