Time travel without guilt
Of course it is not guilty to travel through time, but it is sinful to turn a good and beautiful girl into a beautiful boy! And this beautiful boy seems to be a baby version!
Time travel master, you are the most annoying time travel master I have ever seen! When other people travel through time, they are full of strength, good luck, and have lots of treasures, but what about him? Just a piece of Itachi's Akatsuki outfit from Naruto brought from his own world - a big cloak + cape outfit, and a notebook of unknown use.
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The update will be quite slow, I just wrote it for fun.
Maybe I should take the BL route, so adults, it's better to proceed with caution... Although I'm not sure...