in the first or second book of the series you could see shortly that chiharu diciplinats kazuki through sex - rape - because kazuki had too much women and wasn't taking life seriously. but than kazuki forgave chiharu the rape and they got together ^^ I know its weird ^^
1. book: Happy Yarou Wedding
2. book: Utsukushiki Kemonotachi
in this order ^^
1. Happy Yarou Wedding http://www.mangago.zone/read-manga/happy_yarou_wedding/
2. Utsukushiki Kemonotachi. http://www.mangago.zone/read-manga/beautiful_beast/
3. ...Virgin Love. http://www.mangago.zone/read-manga/virgin_love/
4. Toriko ni Natta Kemono http://www.mangago.zone/read-manga/toriko_ni_natta_kemono/
5. Junai no Seinen http://www.mangago.zone/read-manga/junai_no_seinen/
6. Kemono wa Ai de, Iyasareru. http://www.mangago.zone/read-manga/kemono_wa_ai_de_iyasareru/
http://www.mangago.zone/read-manga/kemono_wa_ai_de_iyasareru_dj_iyasaretai_otoko/
7. Playboy Amour http://www.mangago.zone/read-manga/playboy_amour/
- Romance no Kaori http://www.mangago.zone/read-manga/romance_no_kaori/
8. Oboreru Kemono no Koibito. http://www.mangago.zone/read-manga/oboreru_kemono_no_koibito/
9. Men’s Love http://www.mangago.zone/read-manga/men_s_love/
10. Aikata http://www.mangago.zone/read-manga/aikata/
11. Ueta Aikata http://www.mangago.zone/read-manga/ueta_aikata/
12. Amaeta Kemono no Shitsukekata http://www.mangago.zone/read-manga/amaeta_kemono_no_shitsukekata/
13. Torawareta Amai Kemonotachi
14. Aikata no Aishikata http://www.mangago.zone/read-manga/aikata_no_aishikata/
Is there a manga where it shows how kazuki and chihiro ended up like this? Like how they got together?