UtaTen is a good site that has lyrics when needed however when you link a song there tends to be a lot of numbers and other characters so maybe and they also have artist page for the songs the artist have done and the link is still pretty long so maybe you can organise something its ok if you cant
Works page from Uta Ten
https://utaten.com/lyric/%E6%9D%89%E7%94%B0%E3%81%82%E3%81%8D%E3%81%B2%E3%82%8D%2C%E3%81%A4%E3%81%AE%E3%81%A0%E3%82%8A%E3%82%87%E3%81%86%E3%81%93/%E3%81%82%2C%E3%81%84%2C%E3%81%86%2C%E3%81%88%2C%E3%81%8A%E3%81%AB%E3%81%8E%E3%82%8A%28%E3%80%8C%E3%81%8A%E3%81%8B%E3%81%82%E3%81%95%E3%82%93%E3%81%A8%E3%81%84%E3%81%A3%E3%81%97%E3%82%87%E3%80%8D%29/#sort=popular_sort_asc
Artist Page from Uta Ten
https://utaten.com/artist/%E6%9D%89%E7%94%B0%E3%81%82%E3%81%8D%E3%81%B2%E3%82%8D%2C%E3%81%A4%E3%81%AE%E3%81%A0%E3%82%8A%E3%82%87%E3%81%86%E3%81%93/#sort=popular_sort_asc
Hopefully this site could be added but I think the links could be fixed up if possible