Whilst "Oxygen" may deal with some heavier themes in comparison to "Kieta Hatsukoi", the couples in both series have very cute and fluffy relationships. These are both series that had me smiling nonstop and that I was sad to see come to an end.

Whilst "Happiness" is primarily an apocalypse-themed drama it has a lot of similarities to "Strangers from Hell", especially in the latter half of the show where we start to see the true colours of the other residents in the building the two leads are trapped in. Both dramas have dark, mystery elements and engaging action scenes and you're never quite sure who to trust...

Both miniseries involve a small establishment with thoughtful, down-to-earth employees. Many customers seem to be struggling with personal problems that the employees empathise with and aim to resolve or make better with a relaxing drink and a heartwarming chat.