Title: Zyyg
Content:  The formation of band started in 1992 with Seiki and Seiichirou together. On May 1993, they debuted with single Kimi ga Hoshikute Tamaranai. This debut single was used as a commercial song for Suntory's beer. The single reached #3 on Oricon Weekly Charts, sold over 700,000 copies, and charted over 16 weeks. After this single, additional members Naoki Uzumoto and Naoki Orii joined in recording. On June 1993, Seiki participated in collaboration single Hateshinai Yume wo with Zard, the members of Wands and Rev. The single was used as a theme song for NTV television sport program Geki Kuukan Pro Yakyuu93. The single was recorded for the first time on Zard 
Title: ASAP TyY
Content:  By early 2012, TyY had garnered recognition as a biker on the streets of Harlem. Utilizing his newfound platform, TyY would release his first track, a collaboration between himself and Young Money Yawn entitled "Comme Des Fawk Down", in early 2014.
Title: ZyNOS
Content:  Zyxel first introduced ZyNOS in 1998.
Title: Gyze
Content:  In May 2009 in Sapporo, Japan, two brothers—Ryoji and Shuji Shinomoto—formed the first incarnation of GYZE. Initially called Suicide Heaven, after Tōhoku earthquake and tsunami disaster of 2011 the band was renamed to GYZE. Aruta was invited as a session bassist in 2013 and joined the band before their major debut with Victor Entertainment in autumn 2014. In 2012, GYZE advanced through the Metal Battle Japan event for the chance to play at one of the biggest metal festivals in the world, Wacken Open Air. Their music is characterized by fast-paced drums, easy to sing along lyrical guitar melodies with a bit 
Title: 3YE
Content:  Prior to the group's formation, all of the group's members were part of GH Entertainment's previous girl group Apple.B. Yuji had also participated in K-pop Star 2 and Kara Project before becoming a trainee under GH Entertainment. The trio debuted on May 21, 2019 with their first digital single, "DMT (Do Ma Thang)". Their second digital single, "OOMM (Out Of My Mind)" was released on September 17. In November, they won the Most Anticipated Idol Award at the KY Star Awards. Their third digital single, "Queen" was released on February 21, 2020, followed by their first EP, Triangle, on June 29. On March 19, 2021, it was announced that they will have a comeback with a single titled "Stalker", which was released on April 1.
Title: Jeezy
Content:  many felt the line was in bad taste since it references Yale student Annie Le, who was murdered in 2009. Many felt Young Jeezy and Pusha were making light of Le's tragic death. Nearly two years after first announcing work on Thug Motivation 103, on May 17, 2011, Jeezy released the first single off the album, "Ballin", which features Lil Wayne and peaked at #57 on the Billboard Hot 100. Two months later, on July 22, the second intended single off the album was released, a track called "Shake Life," although it was later scrapped. On July 26, 2011, Jeezy announced a September 20, 2011 release date for Thug Motivation 103. However the 
Title: Y-Zet
Content:  In early 2017, Y-Zet started endeavoring to be able to produce and distribute his first solo album. He launched his debut solo album "Za" (Gene) on 10 June 2017 which spawned more huge hits. Many music industry records have followed since then. In 2018, Y-Zet released two single songs with featured artists, Wyne Lay and NJ.
Title: Yaeji
Content:  After graduation, Yaeji moved back to New York City to get involved in the music scene and to DJ. Her first single, "New York '93", referring to her year of birth, was issued on the New York City label Godmode on February 29, 2016,  followed by a cover of "Guap" by Australian DJ Mall Grab that May. She had previously uploaded songs to SoundCloud, although they were removed; this included "Areyouami", which was released when she was at college. Her debut eponymous EP, including both prior singles, was released by Godmode on March 31, 2017. She began to gain attention following her first Boiler Room session in May 2017, which involved a remix of Drake's single "Passionfruit". The song was later released officially on Godmode's Soundcloud page. The first of several stand-alone singles, "Therapy" was 
Title: Ycee
Content:  sold out a headline gig at the O2 Academy Islington on 12 January 2018. The gig featured additional performances from his label mates Bella Alubo, Sona, Eugy, Ms. Banks and Flosha. On 15 January 2019, he announced on Instagram that he left Tinny Entertainment. He also announced the launch of his record label ANBT, an acronym for Ain't Nobody Badder Than. Ycee released his debut studio album Ycee vs Zaheer on 8 November 2019. It is a mixture of hip-hop, trap, Afrobeats, Afro-house, hyphy, R&B and alte. The album serves as the follow-up to his 8-track debut EP First Wave (2017) and his collaborative EP with Bella Alubo, titled Late Night Vibrations (2018). The album was produced by Adey, Jay Bidz, Ballertosh, Fanatix, BeatsbyKarma, Syn X, Krizbeatz, Jay Popping, 
Title: Yyxy
Content:  The first member, Yves, was revealed on November 14, 2017. She debuted with her single album Yves with the title track "New" on November 28. Being the first introduced out of the last 4 members, the next to be revealed was Chuu. On December 14, at midnight KST, a teaser photo of the latter was revealed with a caption "A mysterious girl is coming". The next single titled Chuu was released on December 27, with the title track "Heart Attack". It is currently the most viewed solo video from Loona on YouTube.

Question: when did the first pair of yeezys come out?
Answer: February 14, 2015.