 If you liked
Chobits
|
 ...then you might like
Suki na Mono wa Suki Dakara Shou ga Nai!!
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Romance, Comedy, the odd Ecchi moments, although in Sukisho it is "male ecchi" and in Chobits it is "female ecchi",
Drama is amplified a lot during the second halves of the series
1 or more characters in both have alternate forms / personalities in order to help them find their love.
both involve "psychological experiments" in some shape or form