Synopsis

It's hard to be the main character, you know? There's a reason why people always dream of being a wise old teacher or a villain. It's even harder when the world you were brought into simply refuses to use the common shonen tropes... Sometimes you have to shapeshift and roleplay half of the cast for the story to go on...

'Ring-ring! Just look at the time, hero. It's time for a training ark!
Remember, you can buy a boost! By using it, you will double the experience you receive for every life-threatening training session. Oh, you will triple the experience, was the session to include an alligator! He-he-he...'

'What, again? How about we'll rather have a beach episode? I need to earn some points with fanservice to buy a [Plot Armor].

'Oh, so you want a harem? Easily done! Next genre - Yaoi-harem!'

'I take my words back... I take them back!'
...
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Not yaoi, by the way.