A White Lotus Blooming on the Wall

After waking up, a highly skilled assassin finds herself transformed into the eldest daughter of the Prime Minister's household, with an unbearably troublesome System to boot. Other people's Systems are golden fingers, so why does mine want me to be a 'white lotus'?

'Warning! Warning! No killing...'

'Warning! Warning! No fighting...'

Reborn, she is driven to madness every day, wishing she could drag the System out and crush it ten thousand times. And that's not all. Why is there also a cobra by her side, seemingly gentle and harmless, yet concealing deadly intent and leaving bloodshed in its wake at every turn?

'I can see you're not what you seem. We're quite a match, so why don't you marry me? That would be better than going around causing trouble for others.'

'I can go to he...'

'Warning! Warning!...'