This is just typical Reverse World Story, right?

This is the story of an earthling named Lubius who died after drowning because the boat he was on had an accident. He was just a little lucky to wake up in his own alternate body in another world.
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My first story so please be kind and I hope you comment if you see something weird and other stuff.
English is not my first language and most of this work is done by DeepL.
I try my best to upload every two days with 1500 words per chapter.

What to expect:
1. Slow-pace story.
2. Harem-oriented story with some Echi, but at the moment I don't think I will write any +18stuff. It's already a lot of smut or +18 in this kind of genre after all.
3. Weak to Strong, but it will be a long ride.
4. No OP MC.
5. No system and stuff.

This is my first time writing. Feedback is welcome, I'd love to hear what you readers like and where you think I could have done better.
Is there some idea and stuff just say it too. Anything welcome...