Zannen Kei na Ojou-sama no Nichijou

Zannen Kei na Ojou-sama no Nichijou summary:

​I have reincarnated in the world of a romance manga, A little spice in love. Wait a minute&h.e.l.lip; aren’t I that antagonist with an extremely poor personality who bullies the cross-dressing heroine, gets resented, then murdered!? The criminal is&h.e.l.lip; that’s right! I died before reading that last volume!
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Etto, let’s live a life always keeping in mind to avoid resentment and train with a dumbbell while I’m at it&h.e.l.lip; but is this really the same world as that shoujo manga? A-re-re&h.e.l.lip; there’re a lot of disappointing ladies here and there&h.e.l.lip;