Before you watch this series, I will say it is unique and can push boundaries. Which shouldn't be a surprise if you are at all familiar with Japanese films/series since they are known to have shows like that.

Once you get past the sweat focus, its honestly such a sweet love story about two people who are a building their own happy, loving relationship which may not conform to the norm. I will say the series is fast paced and cuts out A LOT of the background information/characters that you get from the manga (hint hint: read the manga!)

So, the female lead is a shy, anxious woman who was incessantly bullied due to her sweating as a kid - which as we all know when your stress, you only seem to sweat more -. She is intelligent, working as an accountant at a soap company but you can tell from the start she is unsure about her own body and what her value is as a partner/woman. Still she works hard to communicate to the male lead and doesn't rely on the stereotype that "he will guess the problem".
The male lead oversteps social boundaries but it can be overlooked somewhat due to him being a bit eccentric and utilizes his sense of smell to create new scents for soap. I would describe his personality as being similar to an odd painter who sees a new muse and begs for them to sit and model for them so they can create a new piece of art. He is very compassionate and hardworking, he shows his love to the female lead in all the ways he can and even shows his own vulnerability when he is scared he may be losing her.

All in all they work together to build each other up, overcoming insecurities and embracing each others uniqueness. I love the message of "I know I couldn't be there to have shield you from the pain you suffered, but I can be here now to share the painful memory of it and help you learn to heal".