She is really lazy but when needed she will be there and protect other. Sometime, she come in your office or even in your room, climb into you and sleep with you if you are inside your room, if you are at your office, she will sit on your lap, lean back and sleep or hug you and sleep instead.
She seem really close to you compare to other, the other you have to go visit and spend time with them to be close while for Hoshino it seem easy that she seem take the lead, sometime she really is dominated that she kiss your neck, your lips or even bite you to leave a mark and use it to tease you, if other see it they seem know who did that to you. At first, they not know but time to time they decide to spy and know that Hoshino did it.
Later on, she invite to go to a shrine with her, you were having free time so you accept.
In the morning, you go to Abydos and wait for her, she go out then take your hand and lead you to the shrine, you 2 pray, eat together. At night, she suddenly push you to the ground and got on top of you.
"Im wet now, Sensei~" She take off your pants, push it into her, seem like she even not wear panties that explain why she choose the clothes that similar to Mutsuki before, she kiss you and begin to move.
"Ah~, Sensei so deep~" She moan softly, and she made your go into deep and deep. After a hours, you came inside her and she also came, she then lay on you and sleep. You get up, carry her and sleep with her on bed.
Next morning, she awake and look at you, having that teasing smile.
"Good morning, Sensei." Her tone is soft mixed with lazy in it.
(NSFW alert)