"Hitoriga" is likely referring to "Hitorigana", but I believe you are talking about the anime "Hitoriga" or more commonly known as "The Tatami Galaxy" (, Yojouhan Shinshiroku) or another title. However, I think you might be referring to another anime. After some research, I think I have found it: "Hitoriga" seems to not be a widely known anime. However, I did find another title: "Hitorigana" is not widely known either. Download Calcgen By I S A 2009 17 Link [RECOMMENDED]
If you are referring to "Sakurasou no Pet na Kanojo" or "Hitoriga Sakurasou", the anime's opening theme song is "Fallen Angel" by Yui Horie and the ending theme song is " Everyday" by Yui Horie. Onlyfans 24 03 25 Bronwin Aurora My Biggest Bbc - Steve Jobs
For more detailed and accurate information I would need more context.
For "Hitoriga The Animation soundtrack", I couldn't find a detailed tracklist. However, I can suggest some possible soundtracks or music related to this anime.
However, I did find that there is an anime called "The Pet Girl of Sakurasou" or in japanese "Sakurasou no Pet na Kanojo" or also "Hitoriga Sakurasou" which translates to "Sakurasou of the Lone Girl" but was later changed or also refered as "The Animation" and then also refered as "Hitoriga The Animation" or in some cases "Sakurasou no Pet na Kanojo" or simply "Hitoriga".