MTL - Seal Cultivation for Self-Improvement - ~ The first batch of younger brothers?

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
- English is not my first language, so there would be grammatical mistakes in this story.
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They were together out of a deal, but the relationship between them is extremely real.She was forced into a deal where she would pretend to be his new wife, and her parents would receive a large sum of money from him. He is a well-known CEO locally. Many women regard him as the object of their secret crush. After she became his wife, she suffered many jealousy traps of those women, but he helped her resolve them one by one. Slowly, she started to fall in love with him. Becoming his wife is no longer&n

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.

After their first night, her husband departed for an expedition without another word.

He comes back three years later, this time as a famous knight in the whole continent.

How would Maximilian face him on his return?