if it is the same old colosseum, you don´t need waste your event tickets,
want get the ssr pick the whale choice if you don´t care choice the girl that you like and you will get her but with lower rarity,
in the past whales alwas have picked the cow ugly boobs over the other
the important thing there is the colo boxs with 2 sr and 2 r and other stuff like pudding inside FREE