?

Gattendou Tenmatsuki

http://www.mangago.me/read-manga/kyou_hana_no_gotoshi/ (not really a bodyguard, the seme is a negotiator)
http://www.mangago.me/read-manga/tsumi_bukaku_aishiteyo/
http://www.mangago.me/read-manga/hashire_oujisama/ (this one is also not really a bodyguard)
http://www.mangago.me/read-manga/mamotte_agemasu_yamato_nase/ (not a bodyguard of uke but ends up protecting him? XD)

http://www.mangago.me/read-manga/kousoku_program/
http://www.mangago.me/read-manga/tsumetai_otoko/
http://www.mangago.me/read-manga/body_guard/
http://www.mangago.me/read-manga/last_target/
http://www.mangago.me/read-manga/kimi_wa_pochi_da_daigakuseihen/