Beside You

Both are BLs that have a relationship between a human and a cat shifter.
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Both are short BLs in which the human lead discovers his cat has transformed into a human.
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Beside You and Caged Again are both BL Dramas that involve animal shifters. Both are also Thailand based productions.

Both are fluffy Thai BLs in which one of the leads is a cat.
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Both are short BLs in which the human lead discovers his cat has transformed into a human.
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While in Beside You only the cat turns human and is the love interest, in CMS both deceased cat and dog return reincarnated to their owner, the dog being the love interest.