It eez what it eez

I am looking for a manga I read a while ago. It is not bl. It was about a girl who had test anxiety and to help herself she made a deal with the devil or something to be able to stop time. I think there were numbers in the title or on the cover but I really cannot remember

These two guys go with their friends to an onsen and the taller one ends up being the bottom and all of the friends catch on because he has to be carried. There was also something to do with a tiger, it may have been on the cover or something