After leaving Takarazuka, Hosachi joined an entertainment agency called Space Craft Co., Ltd.And thus began her career as a stage actor and actor.According to verifiable information, Hosachi's first work after leaving Takarazuka was "Kamome," performed at Theatre Cocoon from October 8th to 24th, 1999.At the end of 1999, Sen Hosachi changed her stage name to Mori Hosachi.She used the stage name "Mori Hosachi" until her retirement.

Hosachi's most famous work is "Stray Detective Innocent"（はぐれ刑事純情派） produced by TV Asahi from 2003 to 2007 and  "Takarazuka of Love and Youth - More than Love, More than Life"（愛と青春の宝塚～恋よりも生命よりも～）.Since Takarazuka left Hosachi in October 1998, Hosachi has been released many times since Takarazuka Theater. Including Takarazuka's 90th anniversary (where he served as the host) and Takarazuka's 100th anniversary.Hosachi also participated in the recording of "Outstanding Graduates"（華麗なる卒業生たち＃５４「森ほさち」）.In addition, Hosachi had her own blog in 2010 (but closed it in 2012).On April 15, 2015, Hosachi posted on her long-dormant blog that she had retired on March 31 of the same year, thus bidding farewell to her acting career and returning to a normal life.