naite mo waratte mo
whether you cry or laugh
whatever the outcome will be; regardless of the outcome
It is often used to emphasise that, whatever the outcome will be, the next event (e.g. match/contest/episode) is going to be the last one. In particular, it is used when something is reaching its last phase/climax that you (or someone) have been putting a lot of effort into for a long time.
Whether we cry or laugh, whatever the outcome will be, tomorrow’s match is going to be the last one