Hello everyone, for good hygiene, you must wash your butthole frequently, at least each time you shower. It will make your butthole smell like flowers, at least until the next time you poop.
This is Isekai lesson 101. Especially when you're Japanese, and don't have access to a bath or hot spring. After several days wandering around the forest after you reincarnate, and you're really stinky. Better yet, invent a Japanese toilet, with an automatic butthole washing thing, and sell it to the king. You can get a noble title and a peerage. And the princess will fall in love with you because your invention makes her butthole smell like flowers.