I mainly want something where the main character (male) recieves affection from a female character that he likes, or develops an interest for eventualy (preferably early on).

The more "dere" scenes there are, the better.

Of course romance should be the main focus of the story, but I'm ok with anything that gives a lot of attention in that aspect.

Manga, Manhua, Manhwa and Light Novels are all welcome.

No Gender Bender please. Also try to avoid harem and mecha, although I don't mind them as much.

I tend to not like tsundere characters very much, so try to avoid them as well.

Examples that come to mind would be Koharu no Hibi and Golden Time (Novel).

Thanks in advance

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Be careful of your words, for they will become actions.

Be careful of your actions, for they will become habits.

Be careful of your habits, for they will become character.

Be careful of your character, for it will become your destiny.

You should go for Futari no Renai Shoka, Bonnouji or Musunde Hiraite (Minase Mayu). Very heartwarming... All of them.

They're all seinen, too.

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Yes, you're worthy!