I don't know how to express the very tense and pink atmosphere in the copywriting, so it's probably a story about a girl risking her life to fall in love [Fog]
The eldest daughter who is good at flowers and plants × the son who is obsessed with electronic original equipment.
Super plot-oriented, 1v1, he guarantees, the scam is unknown.
A postscript that has nothing to do with the plot and that the author doesn't know about: I actually love the yandere very deeply.