Kiana, do you understand what filial piety is?

"Mr. Siegfried, oh no, Miss Siegfried now, the operation was successful. You are now a qualified Valkyrie."
Siegfried: ???
In order to protect his daughter Kiana, Siegfried chose to stand up, but the price was...
"Siegfried, you don't want Kiana to find you like this, do you?"
The final recognition
"Dad, why...why..."
"Kiana, don't look at me now, I'm so embarrassed..."
PS: The protagonist is not gay, but there will be some effeminate male characters, deep interactions, and funny moments. If you feel uncomfortable while reading, please click the X in the upper right corner to avoid mental pollution.