Gakuen babysitters?
Here r some of my favs... From 1 - 9...
http://www.mangago.me/home/mangalist/892726/
gin no kutsu
Um... maybe these?
http://www.mangago.me/read-manga/spy_x_family/
http://www.mangago.me/read-manga/yuzuki_san_chi_no_yon_kyoudai/
http://www.mangago.me/read-manga/hinatama/
http://www.mangago.me/read-manga/hey_kageyama_2/
http://www.mangago.me/read-manga/shingeki_no_kyojin_dj_erenyan_to_heichou/
http://www.mangago.me/read-manga/hyakunichikan/
http://www.mangago.me/read-manga/gakuen_babysitters/
any found family tropes recommendation? preferably manga but webtoon is fine jsdfhjsd