 If you liked
Tsuma, Shougakusei ni Naru.
|
 ...then you might like
Jiisan Baasan Wakagaeru
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Both shows have a similar premise where someone in the family becomes younger. ('Reincarnation' being the main plot element for TsumaSho; whereas Jiisan Baasan has spiritual/supernatural elements).
The common recurring theme in both shows is 'Second-hand Happiness'; where they proudly see their kin maturing becoming upstanding people as they face challenges in becoming an adult. And helping them face those challenges when needed.