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!'
...
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Not yaoi, by the way.