Return to BMG Japan: 2007–present
It was announced on May 1, 2007, that Misia had left Avex Trax to return to her former record label, BMG Japan. "Any Love" was released on July 4, 2007; the song was composed by Satoshi Shimano, who also produced her debut hit.
Her song "To Be in Love" is the Japanese theme song to Bridge to Terabithia.
On September 29, 2007, Misia held her first overseas concert, in Taiwan.
Her next single, "Royal Chocolate Flush", was released in December 2007, and the first album since returning to BMG, Eighth World, came out in January 2008.
Ichiro Suzuki (Seattle Mariners), a major league player, chose "Ishin Denshin" and "Royal Chocolate Flush" by Misia as an at-bat music of 2008 with Sayuri Ishikawa's "Amagi-goe".
In May 2008, Misia joined Sadao Watanabe, Juanes, Youssou N'Dour, and Bono for the 'One For All' event on May 29, 2008, for 1,500 in Yokohama, Japan.
Misia put out three new releases from April to June 2008: Yes Forever in April, "Yakusoku no Tsubasa" in May, and Decimo X Anniversario de Misia: The Tour of Misia 2008 Eighth World + The Best DJ Remixes in June.
In continuation of her 10th anniversary celebration, Misia released her first digital single, "Catch the Rainbow" (produced by Sakoshin) on August 30, 2008.]
She wrapped up The Tour of Misia Discothèque Asia in early March, a tour that brought her to Seoul, Singapore, Hong Kong and Shanghai and opened her eyes to the different responses of crowds as she noted "In Japan, it is like people are melting into one group in their excitement, but in Singapore young couples started to kiss. I often see Japanese couples hand-in-hand, but it is rare to see them showing they love each other in front of others."
In 2008, Misia drew near more than 200,000 spectators, second only to Ayumi Hamasaki in the number of concert-goers for a solo female artist in Japan.
The June 2009 single "Ginga/Itsumademo" was inspired by Misia visiting her grandfather for the last time before his death, for which she stated upon its release, "I thanked him for taking me out for a walk when I was a child, for teaching me how to fold origami and make shadow pictures, and for telling me stories. I couldn't stop saying thank you." This and her later single "Hoshi no Yō ni...", which was used as the theme song for the film Mega Monster Battle: Ultra Galaxy were included on Misia's 9th studio album Just Ballade.
Misia's 2010 tour titled "Hoshizora no Live VI" included performances in the open air and within forests in order to raise awareness of biodiversity and to support her anthropological work.
For the 2010 FIFA World Cup in South Africa, Misia recorded the song "Maware Maware" and performed it at Nelson Mandela Square in Johannesburg before the Japan vs Cameroon game. She was also inspired by the International Year of Biodiversity and wrote the song "Life in Harmony", eventually chosen by the Convention on Biological Diversity to be the song for the conference.
In 2011, Misia returned to recording with the song "Ashita e" to raise money for victims of the 2011 Tōhoku earthquake and tsunami and "Kioku", Misia's first official single in nearly a year and a half. These songs, along with "Maware Maware" and "Life in Harmony" were included on Misia's 10th studio album Soul Quest. She followed up Soul Quest with the cover album Misia no Mori: Forest Covers, which includes a cover of Charlie Chaplin's "Smile" which is used as the theme song for the film Friends: Mononokejima no Naki.
In 2012, Misia was invited to perform at the opening ceremonies of the 100th anniversary of the National Cherry Blossom Festival in Washington, D.C., where she sang her songs "Everything", "Ashita e", and a medley of "Maware Maware" and "Can't Take My Eyes Off You". Misia stated that she hoped that her appearance at the concert would re-invigorate the bond between the U.S. and Japan to help with the reconstruction from the 2011 earthquake. Misia performed at the 63rd NHK Kōhaku Uta Gassen in a live broadcast from Namibia's Namib Desert singing "Everything" and "Ashita e".
In 2013, Misia released a 15th anniversary triple album Super Best Records: 15th Celebration, featuring 45 remastered tracks which includes the singles "Koi wa Owaranai Zutto", "Deepness", and "Back in Love Again", along with the new track "Holiday". Misia and Sony also released an accompanying Blu-ray box set titled THE TOUR OF MISIA BOX Blu-ray 15th Celebration, containing 11 disks, ten of which were Blu-ray editions of her previous DVDs and the 11th being a remastered Blu-ray release of her first tour VHS.
In 2020, Misia made another international appearance on the eighth season of Hunan TV's reality singing competition Singer, along with four previously contested singers from seasons four to six, and along with new singers Mao Buyi and Zhou Shen. Misia made it to the finals aired April 24.
On July 23, 2021, sang the Japanese anthem at the opening of the 2020 Olympics.
On December 30, 2021, Misia won the Best Vocal Performance award at the 63rd Japan Record Awards.