when composing and writing lyrics. While Mafumafu primarily works on his solo dōjin albums, he has done two albums with utaite singer Soraru. On 13 April 2016, they released Crocrest Story under the name After the Rain under the Universal Entertainment Japan label. Mafumafu handled most of the composition and arrangement for the album. He said that he tried to create songs that matched both of their musical ranges, was fun for them, and that drew out both of their strengths. The album reached second place on Oricon's weekly charts. His first solo tour ran from 15 January to 5 February 2017. On 7 May, Mafumafu hosted Hikikomori-tachi demo Fest ga shitai! (ひきこもりたちでもフェスがしたい！) and performed alongside Soraru, Amatsuki, Urashimasakatasen, luz, un:c, Araki, nqrse, and kradness. On 18 October 2017, he released the album titled Ashita-iro World end (明日色ワールドエンド), an album which looks at the end of the world. Connected to Disney, an official Disney cover album, was released on 13 March 2019. Mafumafu helped produce the album, as well as performed alongside six other singers. On 22 June 2019, he held a solo live performance at the MetLife Dome with an audience of 35,000 people. On the next day, 23 March, Mafumafu hosted the annual Hikikomori-tachi demo Fest ga shitai! (ひきこもりたちでもフェスがしたい！). In July, Mafumafu released the single Sacrifice (サクリファイス). This was his first time creating music for an anime, this time for the anime To the Abandoned Sacred Beasts. His album titled Kagura-iro Artifact (神楽色アーティファクト) was released through A-Sketch Inc. on 16 October. There were 20 songs in the album, more than any other album Mafumafu had previously released. He attempted to select the best 20 songs he was capable of creating and included songs with a variety of musical styles, which was a different trend from previous albums. Mafumafu also wrote the lyrics, composed, and arranged the music for the opening theme of Pokémon Journeys, scheduled to first air on 17 November 2019, on TV Tokyo. The opening theme "One, Two, Three" is sung by After the Rain, Mafumafu and Soraru's music duo, for the first 31 episodes. On 16 February 2020, Mafumafu was found unconscious in his living room by staff visiting his home. He was transported to a medical institution, where he was diagnosed with cardiogenic syncope. Mafumafu was scheduled to hold a solo show at the Tokyo Dome on 25 March 2020 as well as his