I just did "normal" premium gacha before this one. I'm not very happy becasue I don't expect business promotion like this. As for me, I would never play "normal" premium gacha again, just waiting for this kind of gacha: same price, with a 5*ticket or something. there will be more once started,

Doing business for quite a few years, I'm afraid this kind of promotion actually draws less income as a whole.