～させてください is used when you are asking for permission, “Please let me ～.” ～させてくださる is to express gratitude to someone for letting me do ～.
～させていただく/させていただきます
～させていただく/させていただきます is a humble, very peculiar way of talking about your action. See more examples to learn this pattern here.
投
Today’s #kanji is 投, which is listed under the radical of #てへん（扌）. There are multiple theories on how this character came about. Check them out here.
～さえ･･･ば、—。
～さえ･･･ば、—。 is an expression that is used when just one thing is missing from fulfilling a condition. From that, it can mean “if only ～” or “As long as ～.”
～さえ/～でさえ
～さえ is often used to mention an extreme example so that people can guess the rest of the situation. Check the usage and more examples.
煙
Today’s #kanji is 煙, which is listed under its semantic element of #ひへん（火）. Its phonetic element is 垔, although 煙 and 垔 don’t share a sound.
～さえ
～さえ has 3 meanings. Today’s post talks about さえ which is used for accumulation. Check the usage with these examples.
～まで (for extent)
～まで is usually introduced as the end point marking particle but ～まで is also used as a limit marker and a particle to emphasise the extreme nature of a situation
暮
Today’s #kanji is 暮, which is listed under the radical of #ひらび. It is a compound ideograph made of 莫 and 日. 莫 can mean a grassy place and 日 can be hidden in it
～こむ
こむ is a verb that has the meaning of “to be crowded” or “to be packed,” but ～こむ is also used as an auxiliary verb that follows the stem of a verb.
～さい（際）
～さい is a very formal alternative for ～とき, which can be translated as “when ～” or “at the time when ～.” ～さい is often used with in an honorific expression.
昔
Today’s #kanji is 昔 which is listed under the radical of #ひらび（日）. It is a compound ideograph made of 龷 (“piling up”) and 日.
～さいちゅう（に）/まっさいちゅう（に）
～さいちゅう means “middle of ～” and often used in a rather negative situation where something (usually unexpected) happened in the middle of something important.
昨
Today’s #kanji is 昨, which is listed its semantic element of #にちへん（日） . Its phonetic element is 乍 which apparently has the meaning of “to separate.”
～ことはない/こともない
～ことはない is a phrase to give an advice and it means “you shouldn’t ～” or “you don’t need to ～.” You can rephrase it as ～なくていい.
～ことになっている/こととなっている
～ことになっている/こととなっている is an expression used to explain established rules. You can use it as a gentle reminder. It is derived from ～ことになる.
機
oday’s #kanji is 機, which is listed its semantic element of #きへん（木）. Its phonetic element is 幾. 幾 also has a meaning of “being fine.”
～ことに/～ことには
～ことに/～ことには is an expression used to mention how the speaker feels about the situation. It can be translated as “to one’s ～.”
～こと/～ことだ
This post is about the ～こと that is used as a command or a suggestion. ～こと is a reasonably gentle plain form command and often used in the point form.
期
Today’s #kanji is 期, listed under its semantic element of #つき（月）. Its phonetic element is 其. Its original meaning was apparently “one round around the moon.”
