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.

'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, were the session to include an alligator! He-he-he...'

'What, again? How about we'll rather have a beach episode? Kind of need to earn some score with fanservice to buy a plot armor, you know.

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

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