Responses
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I don't have a single favourite, but here are a few:
http://www.mangago.zone/read-manga/kanjou_spectrum_yoneda_kou/
http://www.mangago.zone/read-manga/kitsu_ka_nu_shisen/
http://www.mangago.zone/read-manga/souteigai_love_serendipity/mf/c001/ (just chapter 1)
And shounen ai:
http://www.mangago.zone/read-manga/yorimichi_kazuki_rai/
http://www.mangago.zone/read-manga/portrait_natsume_kazuki/
best one shot yaoi you've ever read