Recommendations

Both are short Japanese dramas featuring an eccentric male lead who enters someone's life and lights it up with cheerfulness

Both female leads are older than the male leads.
Both romance comedy genre.
Female leads are charming.

Lee Yoo-mi and Kim Jung-eun starrer 'Strong Girl Nam-soon' is on an unstoppable spree! This series is a spin-off of the beloved drama 'Strong Woman Do Bong-soon', which follows the adventures of three generations of exceptionally strong women and was released in 2017.

Both dramas are historical.
They have the same female lead that are fond of cooking.
Setting place is the palace.

Both set up in historical era.
The female lead is the one on the spotlight.
The main story revolves around the palace.

Both are romantic/comedy dramas in which one of the leads shapeshifts between being a dog and a human, with the other lead initially unaware that the dog and human are the same.

Both are about the relationship between one of the leads who is human, and the other lead who is a cat/human shapeshifter.

Both are about the relationship between the human FL, and the ML who is a cat/human shapeshifter. The two live together and fall in love.

Both are about the relationship between one of the leads who is human, and the other lead who is a cat/human shapeshifter.

In both, one of the leads shifts between a human and a cat, and the other lead is human.
......................................................

Both are about the relationship between one of the leads who is human, and the other lead who is a cat/human shapeshifter.

In both, one of the leads shifts between a human and a cat, and the other lead is human.
......................................................

Both are mini dramas about the relationship between a human FL and a shapeshifter animal/human ML (cat vs. dog).

In both, one of the leads shifts between a human and a cat, and the other lead is human.
......................................................

In both mini dramas, one of the leads is cursed/in an accident, resulting in them becoming a cat. The other lead learns their secret.