Responses
maybe: http://www.mangago.me/read-manga/kimi_no_te_wa_boku_no_mono/
chapter2
maybe: http://www.mangago.me/read-manga/kimi_no_te_wa_boku_no_mono/
chapter2
1 - Seme's son got married and left him alone in a big house, then he and his secretary found a kid outside, who later became the housekeper. The kid is actually the son of some rival president company, or something like that.
2 - I only remember is that in the end, one of then got a deep knife injured by protecting the other.
Thank you in advance ^^