Amahane Miran did a cover of ライオン too. She plays both roles and uses a different voice for each. The MV has color coding for which voice is singing. The violin isn't as strong in this cover. It might could be just me. The bass and drums overwhelm the violin. It's on her new channel, so subscribe soon, but not too soon because your subscription might get removed.
https://youtu.be/IDFna1a1ZJ4She talks more about why she makes a new channel in her community post.
https://www.youtube.com/post/UgkxEfFNx_oMDQZ-XgXjpBeQW2sKxtJqwbv2For comparison to the cover MV, in this live cover, Miran has really smooth and controlled singing for the entire duration. It carries an energy of its own unlike the usual energy for ライオン. The violin doesn't get much of a show until the end where it's exceptional. There's a nice violin segment in the beginning to kick things off.
https://youtu.be/7uDm8K3-tJo?t=739The way she sings Ranka's parts feel better than the MV in this live cover. Miran plays the violin much longer, but the vocals and bass are on top of it. There is more harmony between her voice and the violin because of how much longer she plays.
https://youtu.be/68Xm0yvgqtw?t=4881Miran sings with more emotion and power during this live cover. The enthusiasm is clearly seen when she goes for the long tones of ライオン. There's not much of the violin in this, but of what there is, it's good.
https://youtu.be/rSDsmoHLVbc?t=1557This is the best Miran live cover. The reverb is really strong and that may not be to your tastes. It helps emphasize certain notes of her voice and that's where the flavor comes in. That effect might also be what makes her singing sound stronger. Her violin is much more expressive this time around too.
https://youtu.be/0mgo5tV7jlE?t=2187