Ojiro x Kairi, of course ;)
Sorai x Inaba from Soratobu Kouhoushitsu, love how they meet each other when they're at the bottom state of their life. They have their own weaknesses but from meeting each other they find strength to become a better person.
Mayama x Shibata from Keizoku. She is a gullible odd genius with criminal case fetish that lives in her own world and has a hard time connecting with others, but he keeps her grounded. He is a cynical prick that obsessed with revenge and tortured by his past, but she breaks his walls without even trying and becomes his rock. Most of all, they're funny together and have insane chemistry xD
Not romantic couples, but I love their bond nonetheless:
Toma x Sebumi from Keizoku: SPEC. Partners with extreme polar opposite personality, each is tortured individual, but after meeting each other they build a very strong bond and becomes each other's rock. Normally though they just seem like a pair of idiotic siblings xD
Kokoro x Nakata from Juhan Shuttai!, a mangaka and his editor. Love how the ever chirpy and otherwise mild-tempered Kokoro blows her top because of Nakata's antics. Nakata is an odd individual who's overlooked and doesn't inspire confidence until Kokoro 'discovers' him. They start from the same level and walk on the same path and work together to achieve the same dream. Love how they grow through their interaction with each other, and achieve the milestone of their life thanks to each other. Damn I just love these two.
