Other than not folowing even half of the manga,
the love triangle (relationship of Hideo/ Hiro and Hikari was a litle disapointing,
this probably might be very good for the romance genre where people wont bother seeing the obvious ending of this love triangle.
Other than that the animation was good,
i loved Hikari/ Koga/ Hiro characters, it had its nice humour, just didnt develop the way i wanted,
without mention episodes 36 or 37 to 41 were fillers for me.