These are deep waters hahaha because I've never seen it before. I just saw the video on yotutube and really as you say, the animation looks quite old. Although that has its charm, it reminds me of other animations of that era.
I invite you to explore the community and see what other users recommend.
es el prototipo literal, pareciera mucho mas un seinen, pero es muy bueno la verdad lo recomiendo al menos para variar jejeje.