Retired Knight: Miss Loli's Personal Butler

Lane, when he was young, accidentally swallowed the memories of a transmigrator. Later, he joined the knight order and became the leader of the "Dark Corrosion" Knight Order. After the duties of the knight order were completed, Lane happened to receive the news that his adoptive father was seriously ill.
After seeing his adoptive father for the last time, Lane took over his adoptive father's job according to his will.
But... the job of his adoptive father turned out to be the personal butler of a young loli miss?
Nainali Yaxi, nine years old, the daughter of a count.
Although this blonde young miss was very cute, she was a little arrogant. Thus, the daily story of a top knight who transformed into a personal butler and a proud and withdrawn loli young miss began.