The ending is subjective. To quote from Porsche, he said that no one can live in sufferings alone, nor can he live in happiness forever. For someone who has been through a lot to be able to reach this realisation, Porsche must have let go. So, let's stay calm. hugs
FYI: Pause (The song that is playing at the end of the episode.) was composed and sung by Porsche (Karn) during the last shooting scene of the series. This song literally conveys the feelings and emotional of Porsche to Nuer. It's very strong that it can tell the story after what we have seen in the series pretty clear.