Isn't it enough for a guide to just guide well?

Could it be because I'm an F-class guide? Jung Tae-young has never properly guided anyone before. Drowning his sorrows in alcohol after a breakup, he ends up picking up an esper who is devastatingly beautiful but radiates an unstable aura. "Excuse me? Who are you?" "I'm a magpie repaying your kindness." "......?" "I'm the esper you guided yesterday. I came out for a bit, but I can't go back in..." Tae-young starts living together with the pretty esper, Choi Rui, who settles down in his house. As he spends time with the kind and affectionate Rui, Tae-young gradually falls for him, but this esper has a lot of suspicious things about him. "Rui, don't you work?" "...Hyung, do you need mo...