Adventure

After transmigrating into a crossover anime world, Miyauchi Hikage obtains a magical diary. As long as he writes in it every day, he can receive rewards.
    But having read diary-viewing web novels before he transmigrated, he knows that whatever he writes down will most likely be seen by the heroines of this world.
    As a slacker with no great ambitions, Miyauchi Hikage immediately decides to become a pure troll in this world.
    "What era is this? Who still writes a traditional diary?"
    "You don't seriously think someone would be willing to write their true feelings in a diary just to be spied on by who-knows-how-many heroines, do you?"
    "My mom told me that this world is a dangerous place, and that a boy must protect his privacy when he's out and about. So don't even think about looking for me, because I am the man you can never have."
    And as Miyauchi Hikage continues to write in his diary, an "Avengers" composed of the heroines who can see his entries is quietly born.
    They assemble for only one purpose: to find the owner of this diary and subject him to a brutal and inhuman punishment!