The Old Man Reincarnated as a Villainess

A brief description of the “The Old Man Reincarnated as a Villainess” manga:

52-year-old civil servant Kenzaburou Tondabayashi had an accident and reincarnated as Grace – the daughter of a duke, a villain from the world of girlish otome games. Kenzaburou tries to make sense of the situation and tries to play his part, not wanting to interfere with the happy young characters around him. What will come of this? After all, he often gets into various troubles.