December - Passed "AKB48's 4th Trainee Audition" and started her career as AKB48's 7th generation.
2009
August 23 - During "Sokaku Matsuri" concert, it was announced that she was chosen to be a regular member. However, it took almost a year before the new teams started their theater shows, so she only officially became a member of Team A as of 27 July 2010. During the long wait, she was quite distressed about the situation and said, "I knew I had to do something, but I didn't know what to do."[1]
September 27 - Participated in AKB48's first oversea solo concert in New York. She was the only trainee alongsideSumire Sato.
October 30 - Participated in AKB48's first musical troupe "∞・Infinity".
2010
May 17 - Moved agency from AKS to Production Ogi.
May 18 to 23 - Starred alongside Haruka Kohara (ex-SDN48 member) andMoeno Nito in Team Imagine's theater show "Ramerame" (らめらめ). It was her first leading role in a stage show.[2]
June 30 - Became a member ofWatarirouka Hashiritai 7, a sub-unit consisting of AKB48 members attached to Production Ogi.
July 27 - Officially debuted as a member of Team A.
2011
March 20 - Following the tsunami in Japan, she was one of two AKB48 members to perform at the "Japan Aid" Concert at Hilton Guam. She sang "Sakura no Ki ni Narō".
March 29 - Announced in Team A's theater show that she is moving agency from Production Ogi to Nagara Production, a big agency handling famous enka singers such asKiyoshi Hikawa andYutaka Yamakawa, to pursue her singing career as an enka singer.
April 1 - Officially joined Nagara Production, but she remained an active member ofWatarirouka Hashiritai 7.
2012
February 1 - Released her first solo debut, "Mujin Eki" (無人駅, "Ghost Station") under Tokuma Japan Communications. She was the third AKB48 member to release a solo CD afterTomomi Itano andAtsuko Maeda, and the first enka singer in AKB48. She held her first solo release event on January 31 in Shinbashi Station Square.
April 3 - Her first solo radio show "Konbanwasamin" (こんばんわさみん) started broadcasting on TBS channel every Wednesday at 3:30 am.
June 6 - Ranked 33rd in AKB48 27th Single Senbatsu General Election, and became the center of Next Girls.
July 29 - Held "Singing Mujin Eki (Ghost Station) in Ghost Station" event in Kuniyoshi Station of Izumi Railroad. After the event, she assumed the role of train conductor and rode the one-day only "Wasamin Train" (わさみん号) with 40 fans chosen by lottery.
August 24 - During AKB48 in Tokyo Dome concert, it was announced that she will be moving to New Team B.
October 20 - During "Mujin Eki Photo Contest Awarding" event, it was announced that she will release her 2nd single on early 2013.
November 1 - Officially became a member of Team B.
November 3 - Participated as a starting member of Team B's Waiting Show.
2013
January 9 - Released her second solo single, "Moshimo Watashi ga Sora ni Sundeitara" (もしも私が空に住んでいたら, "If I were Living in the Sky") under Tokuma Japan Communications. She held release events every day for a week from January 7 to 13 in various places. She debuted 6th in Oricon Daily Ranking, but successfully ranked 5th in Oricon Weekly Ranking.
In AKB48 Group Daisokaku Matsuri Shuffle held at February 24th 2014, It was announced that she will be moving to Team K.
April 22 - Officially became a member of Team K
2015
During AKB48’s Spring Concert in Saitama Super Arena, it was announced that she will be transferred back to Team B.
2016
January 30 - Announced her Graduation from AKB48 during her 21st Birthday and her Solo Concert, Iwasa Misaki 1st Concert ~Mujineki Kara Aratanaru Shuppatsu no Koku~
