this one dont have the vibes from your chosen ones but uke is exactly like this
http://www.mangago.zone/read-manga/ashita_kare_no_bed_de/
http://www.mangago.zone/read-manga/sakasa_moji_nara_suki_da_to_ieru/
one of the later couples are like this. uke was a fatty when they first met. now he cant belief seme likes him. he thinks he will leave when he knows the truth
http://www.mangago.zone/read-manga/never_understand/?av=2
http://www.mangago.zone/read-manga/shiranu_wa_omae_bakari/
also like you want thoug this one is more with... black humor?
http://www.mangago.zone/read-manga/risou_no_koibito/
not sure but later he thinks seme is better than him? really not sure its been a while. of course insecure chara, inferiority complex
http://www.mangago.zone/read-manga/kore_wa_kitto_yume_no_naka_no_kiss/
if that ain't friend line
http://www.mangago.zone/read-manga/friend_line/
okay thx a lot guys I'll read them (=・ω・=)
hey guys I need help, I'm serching for a manga like those 2:
http://www.mangago.zone/read-manga/ame_to_kiss/
http://www.mangago.zone/read-manga/itonaga_kun_no_koi_no_ito/
An uke with an inferiority complex and with no confidence in him being loved by a seme and doesn't belive it